aponeurosis vs facia

aponeurosis and facia both are nouns.

Word	Noun	Adjective	Verb	Adverb
aponeurosis	Yes	No	No	No
facia	Yes	No	No	No

As nouns, facia is a hypernym of aponeurosis; that is, facia is a word with a broader meaning than aponeurosis:

aponeurosis: any of the deeper and thicker fascia that attach muscles to bones; resemble flattened tendons
facia: a sheet or band of fibrous connective tissue separating or binding together muscles and organs etc

Other hypernyms of aponeurosis include fascia.

aponeurosis (noun)	facia (noun)
any of the deeper and thicker fascia that attach muscles to bones; resemble flattened tendons	a sheet or band of fibrous connective tissue separating or binding together muscles and organs etc