SEO Glossary – SEO Terms: K

This SEO glossary page lists SEO terms related to article writing starting with letter K.

To visit other SEO glossary pages and learn about SEO terms starting with different letters, please scroll down to the bottom of this article.


A keyphrase is a search term in SEO made up of a specific combination of keywords which are likely to be entered into a search engine by a user performing a search query. Using keyphrases or Long Tail search terms will make it easier to achieve organic SEO because it will draw targeted, more specific traffic to your web pages in smaller portions. This kind of web traffic is often called qualified traffic because those visitors are more likely to reach a conversion goal that you’ve preset for your website.


Keywords are the cornerstone of search engine optimization because they play an important role in determining where you’ll rank in the SERPs (where you’ll land in search rankings). users use them to find information on the web and search engines use them to catalog, index and find websites relevant for these searches. In SEO terminology, a keyword is a term referring to a word which may be entered into a search engine by a user, and the word you will use to draw traffic and reveal what your content is all about. The basic classification of keywords includes head or broad terms (short keywords, usually one or two words in length that have high monthly search volumes) and tail terms (longer keyword terms, keyphrases or Long Tail keywords typically made of three or more words having a much lower search volume than the broad terms).

Keyword advertising

Keyword advertising is the kind of advertising related to specific keywords or keyphrases. This type of advertising comes in different forms, such as PPC (pay-per-click), CPA (cost-per-action), or CPM (cost-per-mille, cost-per-thousand impressions) advertising.

Keyword density

Keyword density is the measurement of the number of times a certain keyword appears on the page considering the total number of words on page. For example, if you have 1000 words on page and you used your targeted keyword 10 times, your keyword density is 1%. SEO experts do not agree on the right keyword density ratio, but everybody agrees that using a given keyword excessively may be recognized as keyword stuffing or spamming, and therefore, be penalized by search engines. A rule of thumb dictating the right keyword density would be that too little (not enough) and too much keyword density will make your rankings suffer.

Keyword funnel

A keyword funnel is an SEO term for searches based on related keywords. An Internet user may search for information by entering one keyword, and then continue the search using related keywords.

Keyword research

After choosing web content topics, keyword research is the second step in article writing and search engine optimization. To do keyword research you need to use one or more keyword tools, check advertising competition (how many advertisers compete for a given keyword or phrase for their ad campaigns), search volumes (how many people are searching the web using those keywords), and possibly the cost-per-click (CPC) value of those keywords. Normally, keywords with low advertising competition and high search volumes are the best keywords to use. It’s important to select keyword matches to exact or phrase, instead of broad, although the latter shouldn’t be ignored. However, broad match keywords are usually keywords with high competition and very hard to rank for.

Keyword spamming

Keyword spamming is the practice of using keywords excessively in attempt to trick search engines into ranking a web site or page) higher in search results. Overusing keywords results is having your website penalized by search engines and it definitely doesn’t pay off in the long run.

Keyword stuffing

Keyword stuffing is an SEO term referring to adding more keywords to a web page than appropriate. It’s the same thing as keyword spamming.

Keyword suggestion tools

A keyword suggestion tool is a software application that can suggest keywords based on the content of a website or define various combinations of selected keywords. After selecting a topic, the second step is keyword generation (keyword research). The most popular keyword tools are:

  • Google Keyword Suggestion Tool (Google AdWords Keyword Tool)
  • KeyCompete
  • Keyword Discovery
  • SEO Book Keyword Suggestion Tool
  • Seodigger
  • Wordtracker

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A ? B ? C ? D ? E ? F ? G ? H ? I ? J ? K ? L

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* This glossary is under construction. The links to pages listing article writing and SEO terminology starting with other letters will be added soon.