Papilionoideae vs genus Lathyrus

Papilionoideae and genus Lathyrus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Papilionoideae	Yes	No	No	No
genus Lathyrus	Yes	No	No	No

Papilionoideae (noun)	genus Lathyrus (noun)
alternative name used in some classification systems for the family Papilionaceae	genus of climbing herbs of Old World and temperate North and South America: vetchling; wild pea