European nuthatch vs nutcracker

European nuthatch and nutcracker both are nouns.

Word	Noun	Adjective	Verb	Adverb
European nuthatch	Yes	No	No	No
nutcracker	Yes	No	No	No

As nouns, nutcracker is a hypernym of European nuthatch; that is, nutcracker is a word with a broader meaning than European nuthatch:

European nuthatch: a kind of nuthatch
nutcracker: any of various small short-tailed songbirds with strong feet and a sharp beak that feed on small nuts and insects

Other hypernyms of European nuthatch include nuthatch.

European nuthatch (noun)	nutcracker (noun)
a kind of nuthatch	speckled birds that feed on nuts
	any of various small short-tailed songbirds with strong feet and a sharp beak that feed on small nuts and insects
	a compound lever used to crack nuts open