Free SEO Analysis

SEO Glossary: Key Terms You Need to Know

From understanding algorithm updates to navigating the nuances of user experience, SEO is full of jargons and specialised language that can seem daunting to beginners. This guide is designed to demystify the jargon and provide a clear understanding of the essential terms that are the lifeblood of SEO strategy.

Whether you’re a budding entrepreneur, a content creator, or simply curious about the mechanics of search engines, a solid grasp of these terms will equip you with the knowledge to elevate your SEO game.


SEO Course for Beginners


DNS (Domain Name Server)

DNS is an internet service that takes your domain and gives it an IP address. This makes it possible for people to access your website by typing in the domain name instead of the website’s IP address.

An internet service which translates your domain into an IP address is called the Domain Name System, or ‘DNS’. What this does is make it possible for others to access your website by typing in the domain instead of the site’s IP address.

TLD’s (Top-Level Domains)

While there are many different domains available, only a select few are considered top-level domains. Top level Domains, or TLD’s, such as .com and .org are widely viewed as the smartest strategic choice, when deciding on a domain when the end goal is to obtain organic traffic.


An SEO silo is a strategic approach to structuring a website’s content by grouping related information into distinct sections or categories, much like organising chapters in a book. This method enhances a site’s relevance and authority for key topics, as search engines can easily discern the focus of each silo and rank the site more effectively for those terms.

By interlinking pages within the same silo, but not across different silos, a website can strengthen its thematic significance, leading to improved search rankings for the targeted keywords within each category.

CTR (Click-Through Rate)

This metric measures the number of clicks advertisers receive on their ads per number of impressions. Achieving a high CTR is essential as it directly affects your Quality Score in Google Ads and organic search rankings.

seo glossary search engine optimization

CTR (Click-Through Rate)

This metric measures the number of clicks advertisers receive on their ads per number of impressions. Achieving a high CTR is essential as it directly affects your Quality Score in Google Ads and organic search rankings.

CRO (Conversion Rate Optimisation)

CRO involves strategies aimed at increasing the percentage of visitors to a website who take a desired action, such as filling out a form or completing a purchase. It’s a crucial process for turning your traffic into tangible outcomes.

GA (Google Analytics)

Google Analytics is a powerful tool that tracks and analyses website traffic, giving insights into user behavior, acquisition data, and the performance of various content. It’s vital for understanding the effectiveness of your SEO strategies.

GSC (Google Search Console)

Google Search Console provides insights into how Google views your site and allows you to optimise for better performance in Google search results. It’s an essential tool for monitoring website health and search performance.

search engine crawlers

LSI (Latent Semantic Indexing)

LSI helps search engines identify related keywords and process synonyms to understand content context. Including LSI keywords can improve content relevancy and help with rankings.

NAP (Name, Address, Phone Number)

Consistency in NAP information across the web helps improve local search visibility and accuracy, making it easier for customers to find businesses online.

PA (Page Authority) and DA (Domain Authority)

These scores predict how well a webpage or website will rank on search engine result pages (SERPs). They are used by marketers to compare one site to another and track the “strength” of their website over time.

PPC (Pay-Per-Click)

PPC is an online advertising model where advertisers pay each time a user clicks on one of their online ads. It’s a way to buy visits to your site, rather than attempting to “earn” those visits organically.

SEM (Search Engine Marketing)

SEM is a digital marketing strategy used to increase the visibility of a website in search engine results pages, combining SEO tactics with paid advertising like PPC.

SSL (Secure Sockets Layer)

SSL is a security protocol that creates an encrypted link between a web server and a web browser. It’s critical for protecting user data and impacts SEO as search engines favor secure websites.

keyword stuffing

TF-IDF (Term Frequency-Inverse Document Frequency)

This statistic is used in text mining to reflect how important a word is to a document in a collection. It’s often used by search engines as a weighting factor in information retrieval and text mining.

UX (User Experience)

UX encompasses all aspects of the end-user’s interaction with the company, its services, and its products. Good UX is essential for SEO as it helps to ensure that visitors have a positive experience on your website, which can lead to better engagement and retention.

XML Sitemap

An XML sitemap is a document that helps Google and other search engines better understand your website while being crawled. It provides a roadmap of all your important pages, ensuring that Google can find and index them all.

301 Redirect

A 301 redirect is a way to send both users and search engines to a different URL from the one they originally requested. It’s a best practice for indicating the permanent move of a page and passing on link equity to the new URL.

404 Error

This error message indicates that the server could not find the requested page. For SEO, it’s important to fix 404 errors as they can negatively impact user experience and site quality in the eyes of search engines.

ALT Text/Tag

ALT text is used within an HTML code to describe the appearance and function of an image on a page. Adding appropriate ALT tags to images can improve SEO as it allows search engines to better index and understand the content.

EEAT (Experience, Expertise, Authoritativeness, and Trustworthiness)

EEAT emphasises the importance of the content creator’s personal experience and the depth of their practical knowledge on a topic, alongside their formal expertise. This concept guides search engines in ranking content not just by the factual accuracy and reputation of the information, but also by the value and insight provided by the content creator’s unique experiences.

High E-E-A-T signals to search engines that content is not only credible but also resonates with real-world understanding, which can enhance its authority and rankings.

Rich Snippets

These are enhanced search results in Google, including additional visual or informational elements like ratings, images, or other important data. They can significantly increase CTR by providing more information to users directly on the SERP.

Canonical Tag

The canonical tag is used to tell search engines that a specific URL represents the master copy of a page. It helps to prevent problems caused by identical or “duplicate” content appearing on multiple URLs.

Hreflang Tag

The hreflang tag tells search engines which language you are using on a specific page, so the search engine can serve that result to users searching in that language. It’s particularly important for websites that have content in multiple languages to improve targeting and user experience.

Final Words

By embracing these terms and integrating them into your digital strategy, you position yourself at the forefront of an ever-competitive field. Remember, the journey to SEO mastery is ongoing, and each term you learn and apply is a step towards greater visibility and success in the digital realm. So, keep this guide handy, continue to build on your SEO vocabulary, and watch as the doors to digital opportunity swing wide open in response to your efforts.

Elevate your online presence with ADEL SEO agency, where we blend cutting-edge strategies with proven techniques to unlock your website’s full potential.