acrosome vs appendage

acrosome and appendage both are nouns.

Word	Noun	Adjective	Verb	Adverb
acrosome	Yes	No	No	No
appendage	Yes	No	No	No

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

acrosome: a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the egg
appendage: a natural prolongation or projection from a part of an organism either animal or plant

Other hypernyms of acrosome include outgrowth, process.

acrosome (noun)	appendage (noun)
a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the egg	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