synecdoche
A figure of speech where a part represents the whole or vice versa. Technical term used in rhetoric and literary analysis.
The 'flower' in 'flower viewing' is a kind of synecdoche referring to cherry blossoms.
Standard kanji spelling for this rhetorical term.
Composed of 提 (present, offer) and 喩 (metaphor, illustrate). The exact historical derivation is uncertain; the spelling is conventionally associated with the rhetorical meaning.