SEO and growth glossary
C Terms and Definitions
175 plain-English definitions begin with C. Showing page 1 of 5.
All C definitions
- CAC
- Customer acquisition cost, the average expense to acquire one paying customer.
- Cache header
- An HTTP response header that controls how clients and intermediaries cache a resource.
- Cache-Control
- An HTTP header that defines caching policies for browsers and intermediate caches.
- Caching
- The practice of storing copies of resources for faster subsequent retrieval.
- Caffeine
- A 2010 Google indexing infrastructure overhaul that allowed faster, more continuous indexing of new content.
- Caffeine infrastructure update
- Another name for the 2010 Google infrastructure change that introduced near-real-time indexing.
- Calculated metric
- A metric defined by combining or transforming existing analytics metrics, available in GA4 properties.
- Canonical conflict
- A situation where canonical signals point in inconsistent directions across tags, sitemaps, or hreflang.
- Canonical signal
- Any indicator used by search engines to determine the preferred URL among duplicates.
- Canonical tag
- An HTML link element specifying the preferred URL for a page when duplicates exist, consolidating ranking signals there.
- Canonical URL
- The URL designated as the primary version of a page when duplicates or alternates exist.
- Canonicalization
- The process of consolidating multiple URLs that serve identical or similar content under one preferred URL.
- Carousel rich result
- A SERP rich result that displays multiple items from one site in a horizontally scrollable list.
- Cart page
- An ecommerce page summarizing items a user has added before checkout.
- Case study
- A long-form content asset detailing a real-world example of a process, project, or result.
- Category page
- An ecommerce or content page listing items belonging to a single category.
- CCBot
- The Common Crawl web crawler, whose data is widely used for AI training and research.
- ccTLD
- Country code top-level domain, a two-letter TLD assigned to a country or territory.
- CDN
- Content delivery network, a distributed system of servers that delivers web assets from locations near the user.
- CF
- Citation Flow, Majestic's metric estimating link quantity weighted by authority.
- Chamber of Commerce listing
- A business profile on a local Chamber of Commerce website, often used as a citation.
- Changefreq
- A deprecated XML sitemap element historically used to suggest how often a URL changes.
- Charset declaration
- A meta tag specifying the character encoding used by a web page, typically UTF-8.
- ChatGPT referral
- A site visit originating from a click within the ChatGPT interface.
- ChatGPT search
- The feature within ChatGPT that retrieves and synthesizes information from the live web.
- ChatGPT-User
- An OpenAI user agent token used when ChatGPT browses the web on behalf of a user request.
- Checkout page
- An ecommerce page where a user enters payment and shipping details to complete a purchase.
- Chicago Manual of Style
- A widely used American style guide for writing, editing, and citation, particularly in book publishing.
- Chrome User Experience Report
- A public dataset of real-world Core Web Vitals measurements collected from Chrome users who opt in.
- Chromium
- The open-source browser project that powers Chrome and is used by Google's Web Rendering Service.
- Citation
- Either a structured local business mention with NAP details or a reference link supporting a content claim.
- Citation building
- The process of acquiring local business listings and references to strengthen local SEO.
- Citation cleanup
- The remediation process of correcting inconsistent or outdated business citations across the web.
- Citation Flow
- Majestic's metric measuring the volume of links pointing to a URL or domain.
- Citation link
- A link in body content that supports a factual claim by referencing a source.
- Citation source
- A directory, database, or website used to publish or harvest local business citations.
- City page
- A localized landing page targeting a specific city or municipality for local search visibility.
- Class C IP
- The historical class of IP addresses sharing the same first three octets, formerly used to assess link diversity.
- ClaudeBot
- A web crawler associated with Anthropic, used for content discovery related to its AI products.