keyword – A word used in a performing a search.
keyword density – Keywords as a percentage of indexable text words.
keyword difficulty – A metric that estimates how difficult it would be to rank for an organic search keyword.
keyword marketing – Putting your message in front of people who are searching using particular keywords and keyphrases.
keyword research – The search for keywords related to your Web site, and the analysis of which ones yield the highest return on investment (ROI).
keyword stuffing – The excessive, unnatural use of keywords on a web page for search engine optimization purposes.
keywords tag – META tag used to help define the primary keywords of a Web page.