genus Sericocarpus vs Compositae

genus Sericocarpus and Compositae both are nouns.

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

genus Sericocarpus (noun)	Compositae (noun)
small genus of herbs of the eastern United States: white-topped asters	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia