genus Sericocarpus vs family Compositae

genus Sericocarpus and family Compositae both are nouns.

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

genus Sericocarpus (noun)	family 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