SEO & Discoverability

Busted

• 301 redirectA permanent forward from an old URL to a new one. Visitors land on the right page and the old URL's ranking follows it over.
• AI OverviewsThe AI-written summary above the blue links, stitched from several pages with small citation links attached.
• Anchor textThe visible, clickable words of a link. Search engines and screen readers both read them as the label for wherever it goes.
• BacklinkA link from someone else's site pointing at yours. Search engines read it as a vote, and votes from trusted sites count most.
• Breadcrumb structured dataJSON-LD that tells search engines the Home > Category > Page path, so a result can show a readable trail instead of a raw URL.
• Canonical URLA tag naming the one true version of a page, so duplicate URLs stop competing with each other in search.
• Click depthThe fewest link clicks needed to reach a page from the homepage. Important pages should not be buried without a good reason.
• Content decayThe slow traffic slide of a page that once ranked, because it aged while the query and the competition moved on.
• Crawl budgetHow much fetching a search bot will spend on your site. Usually a large-site concern, not a quota small sites need to chase.
• CrawlabilityWhether a search bot can find a page, request it, and get useful content back. A page behind the wrong block is effectively invisible.
• Crawler (spider/bot)The automated visitor that follows links and fetches pages for a search engine. Googlebot is one; a human with Chrome is not.
• CrawlingSearch bots following links across the web and fetching your pages. If nothing crawls a page, nothing else in SEO can happen to it.
• Duplicate contentThe same or nearly the same page at multiple URLs, leaving search engines to choose which version represents the content.
• Dynamic renderingServing bots a pre-rendered HTML snapshot while people get the JavaScript app. A workaround for crawlers that cannot render the app.
• E-E-A-TGoogle's shorthand for page credibility: real experience, real expertise, recognized authority, and basic trustworthiness.
• EntityA person, place, brand, product, or idea a search engine treats as one identifiable thing with facts and relationships.
• Faceted navigationCatalog filters that can turn one category into thousands of crawlable URLs, most of them duplicate or useless to searchers.
• Featured snippetThe answer box above the normal results, where a search engine quotes a paragraph, list, or table straight off one page.
• Generative Engine Optimization (GEO)Shaping content so AI assistants quote and cite it, not just so Google ranks it.
• IndexabilityWhether a page is allowed and suitable to enter a search index. Passing the checks makes it eligible, not guaranteed to be included.
• IndexingGoogle storing and understanding a page so it is eligible to appear in results. Crawled is not indexed, and indexed is not ranked.
• IndexNowA publishing ping that tells participating search engines a URL changed now, instead of waiting for their crawlers to notice.
• Internal linkingLinks from your own pages to your other pages. How crawlers find things, and how ranking value moves around your site.
• JavaScript SEOMaking JavaScript-built pages expose their real content and links to search bots, not just to a browser after scripts run.
• Keyword cannibalizationWhen overlapping pages on your own site compete for one search intent, causing the wrong URL or a rotating set of URLs to rank.
• Link equityThe ranking value a link can pass to its destination, often called link juice. Internal links move it around your own site.
• Link rel values (nofollow, sponsored, ugc)Labels on a link that tell search engines it is paid, user-added, or not an editorial endorsement.
• Local packThe map and usually three business listings Google shows for local searches such as 'dentist near me.'
• Long-tail keywordA query from the thin end of the demand curve: hardly anyone searches it, and it usually spells out what they want.
• Meta descriptionThe short pitch under your title in search results. It does not affect ranking, only whether anyone bothers to click.
• Mobile-first indexingGoogle crawls and ranks the phone version of your page, so anything missing on mobile is missing from search.
• noindexA directive telling search engines 'you may read this page, just never list it'. The proper way to keep a live URL out of results.
• On-page SEOImproving one page's content, title, headings, links, and metadata so search engines and people can tell exactly what it is for.
• Open Graph image (`og:image`)The preview picture attached to a URL, usually 1200x630: the banner people see before they see your site.
• Open Graph tagsMeta tags that tell Slack, iMessage, and X what title, blurb, and picture to show when someone pastes your link.
• Organic searchPeople finding and visiting you through unpaid search results. No fee is charged for the click, though earning the visibility still costs work.
• Orphan pageA live page that no other page on your site links to. Findable elsewhere, maybe, but outside your internal link graph.
• People Also AskThe expandable related-question box in Google results, where each row opens a short answer and a source link.
• Programmatic SEO (pSEO)Generating many search pages from a dataset and a template, with one useful page for each location, product, or comparison.
• Query fan-outAn AI search system splitting one big question into several smaller searches, then combining what they find.
• Rich resultA search listing dressed up with stars, prices, images, or dates instead of the plain blue link and grey blurb.
• Robots meta tagA tag in an HTML page's head that tells search bots whether to index the page or follow its links.
• robots.txtA plain text file at your domain root telling crawlers which paths to skip. Politeness, not a lock: good bots obey it, bad ones ignore it.
• Search intentWhat the searcher actually wants behind the words they typed: to learn, to reach a specific site, to compare options, or to buy right now.
• Search queryThe actual words a person puts into a search box. It belongs to the searcher; the keyword in your content plan belongs to you.
• Search rankingWhere a page appears in unpaid results for a specific query. It changes by place, device, time, and which search features crowd the page.
• SERPSearch Engine Results Page: the whole screen you get after hitting search, ads and answer boxes and maps included, not just ten blue links.
• SitelinksExtra links to important pages shown beneath a main Google result, like Pricing or Contact under a brand's homepage.
• Sitemap indexA master XML file that points search engines to several smaller sitemap files instead of listing page URLs itself.
• SlugThe human-readable words at the end of a URL, like /blog/how-to-bake-bread. What you write instead of ?post_id=4718.
• Soft 404A missing or empty page that wrongly returns HTTP 200, so the server says success while the content says nothing is there.
• Structured data (JSON-LD)A hidden block of JSON that spells out a page's facts (product, price, rating, author) in a format search engines can parse.
• Target keywordThe main search phrase or close query family a page is built to satisfy. It guides the page; it is not a phrase to stuff everywhere.
• Technical SEOThe site plumbing that lets search engines find, render, understand, and index pages. It clears technical blockers; it cannot make weak content win.
• Thin contentA page that adds nothing a searcher couldn't already get elsewhere. Word count is a symptom, not the definition.
• Title tagThe <title> element: your page's clickable headline in search results and the label on the browser tab. The highest-leverage 60 characters you own.
• Topic clusterOne broad hub page plus focused articles on its subtopics, all interlinked, so a site reads as the authority on one subject.
• Topical authorityThe trust a site earns by becoming genuinely useful across one subject, not by publishing endless keyword variations.
• UnfurlWhen a chat app expands a pasted URL into a preview card with a title, blurb, and image instead of leaving a bare link.
• X-Robots-TagAn HTTP response header that tells search bots how to treat a URL, especially PDFs and other files with no HTML head.
• X/Twitter Card tagsMeta tags that control the title, description, and image shown when someone shares your page on X, still using the twitter: prefix.
• XML sitemapA machine-readable list of every URL you want crawled, parked at /sitemap.xml so search engines do not have to guess what exists.
• Zero-click searchA search that ends on Google because the answer, directions, or summary is already on the results page.

The territory

30 core terms mapped for this field, ranked by how often builders reach for them. Each one is a future entry. Want to bust one? One entry, one file, one pull request.

• CrawlingBots discovering and fetching pages for search engines to process"when Google visits my site" · "bots reading my pages"
• IndexingSearch engines storing eligible pages so they can appear in results"getting on Google" · "why isn't my page showing up"
• Title tagThe clickable headline of a page in search results"the blue link text on Google" · "the browser tab name"
• Meta descriptionShort snippet under the title in search results"the little grey text under the link" · "the search blurb"
• SERPThe search engine results page itself"the Google results page" · "what shows up when you search"
• Search intentWhat the searcher actually wants: learn, compare, or buy"what people mean when they search that" · "the reason behind the query"
• Open Graph tagsMeta tags controlling how a link looks when pasted anywhere"the thing that makes links preview nicely" · "why does my link show blank"
• Open Graph image (`og:image`)The 1200x630 preview picture attached to a shared URL"the picture that shows when you paste the link" · "the Slack/Twitter thumbnail" · "social share card"
• UnfurlWhen a chat app expands a pasted URL into a preview"when Slack turns a link into a card" · "the link preview popping up"
• Structured data (JSON-LD)Machine-readable page facts search engines parse into features"the hidden code that tells Google what my page is" · "schema markup"
• Rich resultEnhanced search listing showing stars, prices, FAQs, images"those listings with stars and prices" · "the fancy Google box"
• Canonical URLTag naming the one true version of duplicate pages"telling Google which page is the real one" · "the master URL"
• SlugHuman-readable last segment of a URL path"the words at the end of the link" · "the URL name"
• XML sitemapMachine-readable list of every URL you want crawled"the file that lists all my pages for Google" · "the crawl index file"
• robots.txtRoot file telling crawlers which paths to skip"the file that blocks bots" · "the crawler rules file"
• noindexDirective keeping a page out of search results entirely"hide this page from Google" · "make it unsearchable"
• 301 redirectPermanent forward that passes ranking to the new URL"point the old link at the new one" · "permanent forwarding"
• Internal linkingLinks between your own pages that distribute crawl and authority"linking my own pages to each other" · "cross-linking my site"
• BacklinkInbound link from another site, the main authority signal"other sites linking to me" · "inbound links"
• Anchor textThe visible clickable words of a link, a relevance signal"the words you actually click" · "the link label"
• Long-tail keywordLonger, specific, lower-competition phrase with clearer intent"the really specific search phrases" · "niche search terms"
• Featured snippetAnswer box lifted above regular results"the answer box at the top" · "position zero"
• Topic clusterHub page plus supporting articles interlinked around one subject"one big guide with articles branching off" · "content hub" · "pillar page"
• AI OverviewsAI-generated answer block above search results"the AI summary at the top of Google" · "the robot answer"
• Generative Engine Optimization (GEO)Optimizing to be cited by AI assistants, not just ranked"getting ChatGPT to mention my product" · "showing up in AI answers" · "AEO"
• E-E-A-TExperience, expertise, authority, trust signals quality raters weigh"proving my site is legit" · "credibility signals"
• Mobile-first indexingGoogle ranks based on the mobile version of pages"Google looks at the phone version" · "the mobile version is what counts"
• Thin contentLow-substance pages that add nothing over existing results"pages with barely anything on them" · "filler pages"
• Content decayTraffic erosion of aging pages that need refreshing"my old posts are losing traffic" · "stale content slipping"
• Orphan pageLive page no internal link points to"a page nothing links to" · "the page Google can't find"

Deeper in the field

• Crawler (spider/bot) Automated program that discovers and fetches pages for search engines
• Crawlability Whether search bots can reach and fetch a page
• Indexability Whether a page is eligible to enter a search index
• Organic search Unpaid discovery and traffic from search engine results
• Search query Words a user enters into a search engine
• Target keyword Query a page is intentionally optimized to rank for
• Search ranking A page's position for a query in organic results
• Technical SEO Site work improving crawling, rendering, indexing, and search eligibility
• On-page SEO Optimizing page content, headings, metadata, and internal relevance signals
• JavaScript SEO Ensuring script-rendered content remains crawlable, renderable, and indexable
• Robots meta tag HTML metadata controlling indexing and link-following directives
• X-Robots-Tag HTTP header applying indexing rules to non-HTML files
• Duplicate content Substantially similar pages creating canonicalization and ranking ambiguity
• Link equity Ranking value passed between pages through links
• X/Twitter Card tags Platform-specific meta tags for large-image link previews
• hreflang Tag mapping equivalent pages across languages and regions for search
• Soft 404 Missing-content page that wrongly returns a 200 status
• Click depth Number of clicks from homepage to reach a page
• Faceted navigation Filter combinations generating near-infinite crawlable URL variants
• Sitemap index Parent sitemap referencing multiple child sitemap files
• IndexNow Push protocol pinging engines the instant a URL changes
• Breadcrumb structured data Structured data rendering a path trail in search listings
• Sitelinks Sub-page links shown indented under a main search result
• People Also Ask Expandable related-question block inside search results
• Entity Real-world thing search engines model as a node, not a keyword
• Topical authority Site-level trust earned by covering one subject exhaustively
• Local pack Three-result map block for location-based queries
• Query fan-out AI search splitting one prompt into many background searches
• Link `rel` values (`nofollow`, `sponsored`, `ugc`) Link attributes declaring paid, user-generated, or untrusted links
• Programmatic SEO (pSEO) Generating many templated pages from a dataset
• Crawl budget Finite pages a bot will fetch per site per period
• Dynamic rendering Serving crawlers static HTML instead of JavaScript-dependent pages
• Keyword cannibalization Multiple own pages competing for the same query
• Zero-click search Query answered on the SERP, so nobody visits