A phrase used in encryption in the style of a keyword.(noun)
A phrase of relative importance in a text, like a keyword.(noun)
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Use "keyphrase" in a sentence
"Moreover, the order of words in a multi-word keyphrase will directly influence the information displayed."
"If you're getting a high bounce rate from an 8-word keyphrase, it's probably a worse situation than the same bounce rate for a 2-word keyphrase."
"Make sure within the content of that blog post the keyphrase is used at least once, and that the keyphrase is a clean anchor text link to the site or page you are trying to rank."