Aesop's fables vs apologue

Aesop's fables and apologue both are nouns.

Word	Noun	Adjective	Verb	Adverb
Aesop's fables	Yes	No	No	No
apologue	Yes	No	No	No

As nouns, apologue is a hypernym of Aesop's fables; that is, apologue is a word with a broader meaning than Aesop's fables:

Aesop's fables: a collection of fables believed to have been written by the Greek storyteller Aesop
apologue: a short moral story (often with animal characters)

Other hypernyms of Aesop's fables include allegory, fable, parable.

Aesop's fables (noun)	apologue (noun)
a collection of fables believed to have been written by the Greek storyteller Aesop	a short moral story (often with animal characters)