family Compositae vs genus Sericocarpus

family Compositae and genus Sericocarpus both are nouns.

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

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