genus Campephilus vs bird genus

genus Campephilus and bird genus both are nouns.

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

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

genus Campephilus: a genus of Picidae containing the ivory-billed woodpeckers or ivorybills (Campephilus)
bird genus: a genus of birds

genus Campephilus (noun)	bird genus (noun)
a genus of Picidae containing the ivory-billed woodpeckers or ivorybills (Campephilus)	a genus of birds