Java Applets
Small programs written in the Java programming language that can be embedded into web pages.

JavaScript (JS)
A scripting language that provides browser functionality.

Joomla
Joomla is a PHP based content mangement system released under GNU GPL License.

Key Phrase (or keyword phrase)
A group of words that form a search query.

Keyword (KW)
Used to define the terms a user might enter into a search engine to find information on their query.

Keyword Density
The number of occurrences that a given keyword appears on a web page.

Keyword Effectiveness Index (KEI)
The KEI compares the number of searches for a keyword with the number of search results to pinpoint which keywords should be the most effective for a campaign.

Keyword Popularity
Number of occurrences of searches done by Internet users of a given keyword during a period of time.

Keyword Prominence
The location (i.e placement) of a given keyword in the HTML source code of a web page. The higher up in the page a particular word is, the more prominent it is and thus the more weight that word is assigned by the search engine.

Keyword Research
Determining the words and phrases that people use to find something, then compiling them into a list for use on web pages, etc.

Keyword Stuffing
Placing excessive amounts of keywords into the page copy and HTML - shady way of gaming the search engines which should be discouraged.

Keyword-Rich
Indicates a given page or bit of text is chock full of good, relevant keywords rather than a bunch of meaningless words.

Keywords Meta Tag
Tag within the Head section of an HTML document containing a list of keywords found on the page.