(noun) use of the wrong word for the context / (noun) use of a forced and especially paradoxical figure of speech (as blind mouths)
I’m very interested in catachresis, Clémentine is saying. [...] You know, like a euphemism, or a misnaming, or things that there are no names for. Mixed metaphors. Language is an imperfect tool, no matter what Flaubert thought.