Compositae vs genus Prenanthes

Compositae and genus Prenanthes both are nouns.

Word	Noun	Adjective	Verb	Adverb
Compositae	Yes	No	No	No
genus Prenanthes	Yes	No	No	No

Compositae (noun)	genus Prenanthes (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	genus of North American and Asiatic perennial herbs having pinnatisect leaves small heads of drooping yellowish to purple flowers; sometimes includes species often placed in genus Nabalus