Metonymy
Metonymy ( mi-TONN-ə-mee) is a figure of speech in which a thing or concept is called not by its own name but rather by the name of something associated in meaning with that thing or concept. The words metonymy and metonym come from the Greek: μετωνυμία, metōnymía, "a change of name", from μετά, metá, "after, beyond" and -ωνυμία, -ōnymía, a suffix used to name figures of speech, from ὄνῠμα, ónyma or ὄνομα, ónoma, "name".
For instance, Wall Street is often used metonymously to describe the U.S. financial and corporate sector, while Hollywood is used as a metonym for the U.S. film industry because of the fame and cultural identity of Hollywood, a district of the city of Los Angeles, California, as the historical center of American film studios and U.S. film stars.
Metonymy and related figures of speech are common in everyday talk and writing. Synecdoche and metalepsis are considered specific types of metonymy. Polysemy, multiple meanings of a single word or phrase, sometimes results from relations of metonymy. Both metonymy and metaphor involve the substitution of one term for another. In metaphor, this substitution is based on some specific analogy between two things, whereas in metonymy the substitution is based on some understood association or contiguity.
