Is there a specific name, a figure of speech, for a "deliberate, even subtle change of the meaning of a word"? Example: "- You're doing politics at school as a teacher! - Everything can be considered politics." Meaning of politics in the accusation: political propaganda which is ethically wrong; meaning of politics in the defense: its ontological nature that can apply to any matter in a society. In the answer, in the defense, somebody discards the meaning, the acceptation of the word "politics" as intended by the accuser, possibily in order to play tricks, win the controversy by confusing a naive audience. I would like to know if there is a specific name for that "change", that "semantic discard", the switching from a word acceptation to another, from a gnoseological level to another.