osteophyte vs appendage

osteophyte and appendage both are nouns.

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

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

osteophyte: small abnormal bony outgrowth
appendage: a natural prolongation or projection from a part of an organism either animal or plant

Other hypernyms of osteophyte include outgrowth, process.

osteophyte (noun)	appendage (noun)
small abnormal bony outgrowth	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