What's the noun for metaphoricity? Here's the word you're looking for.
metaphor
(uncountable and countable, rhetoric) The use of a word or phrase to refer to something that it is not, invoking a direct similarity between the word or phrase used and the thing described (but in the case of English without the words like or as, which would imply a simile); the word or phrase used in this way; an implied comparison.
“To do so, she explores the idea of metaphoricity, transforming conceits into self-reflexive, self-questioning, and ultimately self-effacing representation.”
“Bill must be the most astonishing and delightful and heartbreaking metaphorist in all of fiction and philosophy, and most of poetry, too.”
“Lewis may have been a metaphorist all along, and his visual reach was probably strengthened by his own racial struggles.”
“But with John Prescott, left, retiring shortly, it's great that Wales now appears to have a mixed metaphorist of its own ready to take up his mantle.”