genus Gerea vs Compositae

genus Gerea and Compositae both are nouns.

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

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