Compositae vs genus Rhodanthe

Compositae and genus Rhodanthe both are nouns.

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

Compositae (noun)	genus Rhodanthe (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	genus of xerophytic herbs and shrubs of South Africa and Australia; sometimes included in genus Helipterum