SEO Glossary: 29 Terms & Phrases You Need To Remember

Do you want to improve your SEO?

Have you read many articles about this subject, including on my blog – Kevin Lewis Online? Today I’ll give you the keys to understand all the concepts related to SEO.

Here are the 29 essential SEO terms you should know from my SEO glossary:

1.Google Algorithm

Google algorithm is a set of operating rules, implemented in the form of a calculation, which allows you to properly position an item based on a query. Google’s algorithm consists of more than 200+ ranking factors. These are not known to the general public in their entirety.

2.AMP or Accelerated Mobile Page

AMP is a Google launched format allows different websites display correctly and quickly on the new mobile communication media such as smartphones or tablets. Your site must be offered in this format in order to limit your bounce rate.

3.Tree Structures

The tree structure of a site is the trunk that composes it and its different branches. In other words, it is the structure that makes it possible to prioritize the different pages present on your site.

Working with the tree structure so that it is consistent is essential for reference. For example, you have to think about integrating an “About Us ” and “Contact Us” page, it’s also working on the internal network.

My Tip: One of the best TREE structures that I’m using for my websites is SILOs structure. Just do research on it.

SILOs Structures for Beginers


Your audience is made up of everyone who visits your site. It is also your target. These people can come occasionally or regularly.

It is important to differentiate the number of visitors from the number of connections. A person who comes every day is then counted as a unique visitor.


The backlinks are external links that point to your sites. They are found in articles outside your site but also on social networks or in forums.

These backlinks are very important because they allow search engines to consider your website as a quality site. The more backlinks you have, the better your reputation.

6.Meta Tags

Meta tags are used to improve the structure and the visual of your website. To optimize your SEO, you have to work on meta title tag with some keywords, and meta description tag which summarizes your article in a few words.

These 2 meta tags you often see when you search engine (like on Google), it must therefore be treated to attract a maximum of Internet users on your site.

7.CTA or Call to action

A call to action is an incentive to take action. It generally takes the form of a large button or a statement: “Click here to find out more”, “Get Access Now!”,etc.

These CTAs are very present on e-commerce sites.

8.Duplicate content

We speak of duplicate content when part of your content is also published in another article or on another site.

Duplicate content is very penalizing for SEO. It shows that your article is not at all original and therefore has no interest.


Your E-reputation is your online reputation. It is largely measured by search engines. To have a good reputation, you must offer quality content but also be cited by other sources.

To improve it, you can for example ask influencers to talk about you, or try to become an expert in your field and be essential.

10.Evergreen happy

The term evergreen refers to trees that remain green throughout the year. Evergreen content is one that is not obsolete after a few weeks or months.

It is important to have them on your site.

11.Influencer generated content (IGCs)

IGCs are content created by influencers. In the vast majority of cases, production is done at the request of companies.

They want to enjoy different, more authentic content and the audience of influencers.


The indexing of an Internal site is its recording in a directory or in the database of a search engine. Each page is classified and, according to Internet users’ requests, returned via the results page.


An influencer is someone, usually an individual, who uses a blog or social media to communicate their opinions (influencer marketing).

It federates a real community around it and can even influence consumption patterns. An influencer is always on the lookout for news that they disseminates, analyzes and comments on.


Keywords are the queries when internet users type on the search engines. These keywords must be inserted into each page of your website.

Before writing your content, it is therefore highly recommended to do keywords research to find out the main keywords and the long tail keywords that refine the SEO.

15.Landing page

A landing page is a webpage or an entry page. The landing page is not a home page. It can be a section overview page or a page that gives direct access to information through the use of links.

16.Internal Links and External Links

In your website, you must include internal links, which link to inner-pages of your site and external links which link to interesting and ideally official sources. The presence of these links is an asset for SEO.

Besides, you need to make sure that they work properly. If so, your audience will not linger. Your bounce rate will be high and your conversion rate very low.


The term mobile-friendly means that a site is also designed for mobile devices such as smartphones or tablets.

The display is optimized as is the download time. This form of ergonomics is essential for referencing.

18.Search Engine

Search engines are tools available to Internet users so that they can find the information they are looking for. The most important is Google, but there are others like Bing and Yandex. To allow search engines to find you, you have to seduce them with content adapted to their requirements.

19.Page Rank

The concept of Page Rank was developed by Google. It allows you to rate a page according to its interest. A score ranging from 1 to 10 is given and impacts referencing.

This factor has been abandoned but remains paradoxically important in the Google algorithm.

20.Position (Ranking)

Position is also called ranking. This is the position a page occupies in search engine results.

Position is directly impacted by the query and therefore the keywords used. For good, the page must be in the first 20 results.

21.Return On Investment (ROI)

The ROI is the return on investment. This notion makes it possible to measure the success and therefore the profitability of a marketing campaign by taking into account the costs of the campaign and the commercial activity generated.

22.Search Engine Advertising

Search Engine Advertising is a practice which consists in taking advantage of a better positioning of its website through the purchase of ads space but also of keywords on search engines.

This functionality is offered among others by Google Adwords.

23.Search Engine Marketing (SEM)

It includes SEA (Search Engine Advertising), SEO (Search Engine Optimization) and SMO (Social Media Optimization). In other words, it brings together all the practices that improve ranking on search engines.

24.Search Engine Optimization (SEO)

The SEO is a set of technologies that improve the visibility of a website in the SERP, the search results pages. It includes a better understanding of the requirements of search engines.

25.SERP or Search Engine Results Page

SERPs are the search engine results pages. These pages consist of natural results as well as commercial results.

A good ranking on SERPs depend on quality and optimized content. The ideal is to be positioned in the first two pages, in the first 20 results.

26.Social Media Optimization (SMO)

The SMO is a set of methods which make it possible to attract visitors to a site by promoting it on social networks like Facebook, Instagram, Twitter, etc.

It also improves the dissemination of content. Now essential, SMO completes SEO.

27.Conversion rate (CR)

The conversion rate is the ratio between the number of unique visitors and the number of actions. Among them, there is the request for information, the subscription to the newsletter, the downloading of a document or even an online purchase.

28.Bound Rate

A bounce rate allows you to measure the number and therefore the percentage of Internet users who came to your site but who did not read more than one page.

It is an excellent indicator for improving content.

29.User Generated Content (UGC)

The UGC are the products contained by customers of a brand, which become ambassadors. It can be opinions or comments (feedback). This free content is beneficial for businesses because it positively impacts e-reputation.

My glossary is now complete, but don’t hesitate to submit your new terms and phrases.

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