Chordeiles vs bird genus

Chordeiles and bird genus both are nouns.

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

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

Chordeiles: a genus of Caprimulgidae, containing the nighthawks (Chordeiles)
bird genus: a genus of birds

Chordeiles (noun)	bird genus (noun)
a genus of Caprimulgidae, containing the nighthawks (Chordeiles)	a genus of birds