Paronomasia

Paronomasia is the technical rhetorical term for what English speakers usually call the pun: a play on words that exploits similarity of sound (homophones) or multiplicity of meaning (polysemy) to make two senses collide in a single utterance. The Greek roots — 'para', beside, and 'onoma', name — describe the mechanism: two names placed side by side, one of them ghosting the other.

The reputation of the pun in English has swung. Shakespeare and Donne used paronomasia constantly and expected their audiences to relish it; the eighteenth century found it low, and Samuel Johnson famously said that a pun was 'the lowest form of wit'; the twentieth-century recovery of metaphysical poetry restored its prestige, at least among readers who could tell a compressed one from a lazy one.

In serious use, paronomasia does argumentative work: it lets a writer suggest a kinship between two ideas that a plain sentence would have to labour to demonstrate. Donne's 'Batter my heart, three-personed God' turns on a whole family of puns that argue, without ever stating, that violence and love share a grammar in the speaker's soul.

Common mistake: valuing the pun for its cleverness rather than its collision. A pun that only proves that two words sound alike is a trick; a pun that shows why the resemblance matters — that the second sense clarifies, complicates, or subverts the first — is a figure.