acromial process vs outgrowth

acromial process and outgrowth both are nouns.

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

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

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

Other hypernyms of acromial process include appendage, process.

acromial process (noun)	outgrowth (noun)
the outermost point of the spine of the shoulder blade	a natural prolongation or projection from a part of an organism either animal or plant
	the gradual beginning or coming forth
	a natural consequence of development