I've been looking for a word all day with a very specific definition, It is very similar to a misnomer, yet intentional and usually through unreality to describe something humorously, E.g. "Horse tornado" as a word for carousel or "Cold house" as a word for fridge. This is a very specific word. The closest I've come is misnomer, or something similar to the opposite of folk etymology, But I'm not able to find anything more specific due to horrendous google search results
The nature of impossibility (unreality) is captured with the literary term
CATACHRESIS (Grk. "misuse"): A completely impossible figure of speech or an implied metaphor... For instance, Hamlet says of Gertrude, "I will speak daggers to her." A man can speak words, but no one can literally speak daggers. In spite of that impossibility, readers know Shakespeare means Hamlet will address Gertrude in a painful, contemptuous way.
-Carson Newson University.
and I would say fits your first example:
As a horse cannot be a tornado, nor a tornado a horse ; yet in the context of a carousel the imagery is meaningful and still makes sense, much like the yoking of speaking and daggers, should not make sense, yet it does.