family Compositae vs genus Gerea

family Compositae and genus Gerea both are nouns.

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

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