What do you call a word that's been used unusually (not according to definition)?

For example, when you say:

They smelt music

or

He forged a meaning out of it

According to dictionary definitions, the word choices in the above sentences might not fit. The usage is more figurative. Is there a word that describes this?

That is a figurative usage of terms:

• of words, language, etc. : used with a meaning that is different from the basic meaning and that expresses an idea in an interesting way by using language that usually describes something else : not literal

(M-W)

Also metaphoric:

• A figure of speech in which a word or phrase that ordinarily designates one thing is used to designate another, thus making an implicit comparison, as in "a sea of troubles" or "All the world's a stage" (Shakespeare).

Try catachresis -

An application of a term to something which it does not properly denote.

Also, there is heterophemy -

The use of some other word or phrase in place of the one that was meant.

They smelt music

This is a synaesthesia.

a rhetorical device or figure of speech where one sense is described in terms of another