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Keyness
Keyness is a term used in linguistics to describe the quality a word or phrase has of being "key" in its context. Keywords are "items of unusual frequency in comparison with a reference corpus".〔Scott, M. & Tribble, C., 2006, ''Textual Patterns: keyword and corpus analysis in language education'', Amsterdam: Benjamins, 55.〕
Compare this with collocation, the quality linking two words or phrases usually assumed to be within a given span of each other. Keyness is a ''textual'' feature, not a language feature (so a word has keyness in a certain textual context but may well not have keyness in other contexts, whereas a node and collocate are often found together in texts of the same genre so collocation is to a considerable extent a ''language'' phenomenon). The set of keywords found in a given text share keyness, they are co-key. Words typically found in the same texts as a key word are called ''associates''.
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Keyness」の詳細全文を読む
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