Haematopus vs bird genus

Haematopus and bird genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Haematopus	Yes	No	No	No
bird genus	Yes	No	No	No

As nouns, bird genus is a hypernym of Haematopus; that is, bird genus is a word with a broader meaning than Haematopus:

Haematopus (noun)	bird genus (noun)
the genus of oystercatchers (Haematopus)	a genus of birds