acromial process vs appendage

acromial process and appendage both are nouns.

Word	Noun	Adjective	Verb	Adverb
acromial process	Yes	No	No	No
appendage	Yes	No	No	No

As nouns, appendage is a hypernym of acromial process; that is, appendage is a word with a broader meaning than acromial process:

acromial process: the outermost point of the spine of the shoulder blade
appendage: a natural prolongation or projection from a part of an organism either animal or plant

Other hypernyms of acromial process include outgrowth, process.

acromial process (noun)	appendage (noun)
the outermost point of the spine of the shoulder blade	a part that is joined to something larger
	an external body part that projects from the body
	a natural prolongation or projection from a part of an organism either animal or plant