allegoricalness vs idiom

allegoricalness and idiom both are nouns.

Word	Noun	Adjective	Verb	Adverb
allegoricalness	Yes	No	No	No
idiom	Yes	No	No	No

As nouns, idiom is a hypernym of allegoricalness; that is, idiom is a word with a broader meaning than allegoricalness:

Other hypernyms of allegoricalness include artistic style.

allegoricalness (noun)	idiom (noun)
The state or quality of being allegorical.	the style of a particular artist or school or movement
	the usage or vocabulary that is characteristic of a specific group of people
	an expression whose meanings cannot be inferred from the meanings of the words that make it up
	a manner of speaking that is natural to native speakers of a language