Keyword

Keyword may refer to:

Computing

• Keyword (computer programming), word or identifier that has a particular meaning to the programming language
• Keyword (cryptography), word used as the key to determine the letter matching of the cipher alphabet to the plain alphabet
• Keyword (Internet search)
• Index term, a term used as a keyword to retrieve documents in an information system such as a catalog or a search engine
• Keyword advertising, a form of online advertising
• Keyword clustering, a practice search engine optimization
• Keyword density, how often a keyword appears on web page

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Other

• Keyword (linguistics), word which occurs in a text more often than we would expect to occur by chance alone
• Keyword (rhetoric), a word that academics use to reveal the internal structure of an author's reasoning
• Keywords: A Vocabulary of Culture and Society, 1973 non-fiction book by Raymond Williams
• "Keyword" (Tohoshinki song), a 2008 J-pop song