tuberosity vs appendage

tuberosity and appendage both are nouns.

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

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

tuberosity: a protuberance on a bone especially for attachment of a muscle or ligament
appendage: a natural prolongation or projection from a part of an organism either animal or plant

Other hypernyms of tuberosity include outgrowth, process.

tuberosity (noun)	appendage (noun)
a protuberance on a bone especially for attachment of a muscle or ligament	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