# SEO Glossary

Definitions of common SEO and web crawling terms used across our guides.

## Terms

- **Broken links**: Outgoing links and images that return 404 or fail to connect hurt user trust and waste crawl budget. [More Info](/content/glossary/broken-links/index.html)
- **Canonical URL**: A canonical URL is an HTML element that tells search engines which version of a page is the preferred one for indexing. [More Info](/content/glossary/canonical-url/index.html)
- **Click-through rate**: Click-through rate (CTR) is the percentage of users who click on a search result after seeing it, measuring how compelling your listing is. [More Info](/content/glossary/click-through-rate/index.html)
- **Crawl budget**: Crawl budget is the number of pages a search engine will crawl on your site within a given timeframe. [More Info](/content/glossary/crawl-budget/index.html)
- **Duplicate descriptions**: Pages sharing the same meta description compete for clicks in search results. [More Info](/content/glossary/duplicate-descriptions/index.html)
- **Duplicate H1**: Multiple pages sharing the same H1 weakens differentiation and rankings. [More Info](/content/glossary/duplicate-h1/index.html)
- **Duplicate titles**: Pages sharing the same title compete with each other in search results. [More Info](/content/glossary/duplicate-titles/index.html)
- **E-E-A-T Signals**: E-E-A-T stands for Experience, Expertise, Authoritativeness, and Trustworthiness - the quality criteria Google uses to evaluate web content and its creators. [More Info](/content/glossary/eeat-signals/index.html)
- **Empty H1 Tag**: Pages with an H1 tag that contains no text waste heading potential. [More Info](/content/glossary/empty-h1/index.html)
- **H1 Tag in SEO**: An H1 tag is the primary heading element on a web page, signaling the main topic to search engines and users. [More Info](/content/glossary/h1-tag/index.html)
- **HTTP status codes**: HTTP status codes are three-digit numbers returned by a server to indicate the result of a browser or crawler request. [More Info](/content/glossary/http-status-codes/index.html)
- **Internal linking**: Internal linking is the practice of linking pages within the same website to help users navigate and distribute link equity. [More Info](/content/glossary/internal-linking/index.html)
- **Keyword cannibalization**: Keyword cannibalization occurs when multiple pages on the same site compete for the same search query, splitting ranking signals. [More Info](/content/glossary/keyword-cannibalization/index.html)
- **Lexical Diversity**: Lexical diversity measures the range of unique words used in a piece of content relative to its total word count, serving as a quality signal for both SEO and AI-driven answer engines. [More Info](/content/glossary/lexical-diversity/index.html)
- **Link equity**: Link equity is the ranking value that flows from one page to another through hyperlinks, influencing search engine rankings. [More Info](/content/glossary/link-equity/index.html)
- **Long content**: Pages with over 5,000 words may need restructuring for better readability. [More Info](/content/glossary/long-content/index.html)
- **Long descriptions**: Meta descriptions over 160 characters get truncated in search result snippets. [More Info](/content/glossary/long-descriptions/index.html)
- **Long H1 Tag**: H1 tags over 70 characters lose focus and dilute keyword targeting. [More Info](/content/glossary/long-h1/index.html)
- **Long titles**: Titles over 60 characters get truncated in search results. [More Info](/content/glossary/long-titles/index.html)
- **Long URLs in SEO**: URLs over 120 characters are harder to share and may signal poor site structure. [More Info](/content/glossary/long-urls/index.html)