grassfinch vs weaver

grassfinch and weaver both are nouns.

Word	Noun	Adjective	Verb	Adverb
grassfinch	Yes	No	No	No
weaver	Yes	No	No	No

As nouns, weaver is a hypernym of grassfinch; that is, weaver is a word with a broader meaning than grassfinch:

grassfinch: usually brightly-colored Australian weaverbirds; often kept as cage birds
weaver: finch-like African and Asian colonial birds noted for their elaborately woven nests

Other hypernyms of grassfinch include weaver finch, weaverbird.

grassfinch (noun)	weaver (noun)
usually brightly-colored Australian weaverbirds; often kept as cage birds	finch-like African and Asian colonial birds noted for their elaborately woven nests
	a craftsman who weaves cloth