apologue vs allegory

apologue and allegory both are nouns.

Word	Noun	Adjective	Verb	Adverb
apologue	Yes	No	No	No
allegory	Yes	No	No	No

As nouns, apologue and allegory are synonyms defined as:

apologue and allegory: a short moral story (often with animal characters)

Other synonyms of apologue include fable, parable.

apologue (noun)	allegory (noun)
a short moral story (often with animal characters)	a short moral story (often with animal characters)
	an expressive style that uses fictional characters and events to describe some subject by suggestive resemblances; an extended metaphor
	a visible symbol representing an abstract idea