family Compositae vs genus Gaillardia

family Compositae and genus Gaillardia both are nouns.

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

family Compositae (noun)	genus Gaillardia (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	genus of western American hairy herbs with showy flowers