Given a passage and a question, find the answer to the question based on the passage. The answer should consist of only one word that lies in the span of only one of the sentences in the passage.

Paragraph: Metonymy ( / mɪˈtɒnɪmi / mi - TON - i - mee ) is a figure of speech in which a thing or concept is referred to by the name of something closely associated with that thing or concept . The words metonymy and metonym come from the Greek μετωνῠμία , metōnymía , `` a change of name '' , from μετά , metá , `` after , beyond '' , and - ωνυμία , - ōnymía , a suffix that names figures of speech , from ὄνῠμα , ónyma or ὄνομα , ónoma , `` name '' .
Question: the idea that concepts are represented by a common instance of the category is called

Metonymy