genus Pieris vs arthropod genus

genus Pieris and arthropod genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Pieris	Yes	No	No	No
arthropod genus	Yes	No	No	No

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

genus Pieris (noun)	arthropod genus (noun)
type genus of the Pieridae	a genus of arthropods
decorative evergreen shrubs of woody vines