Definition from Wiktionary, the free dictionary
|Kanji in this term|
|こ > ご
- (idiomatic): "dango instead of flowers", substance over form → indicating a preference for the practical over the purely aesthetic, preferring dango (which are tasty and nutritious) rather than flowers (which are merely decorative)
Although this is a well-known metaphor, it is often used literally and in puns without directly signifying the metaphoric meaning.