genus Echinacea vs Compositae

genus Echinacea and Compositae both are nouns.

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

genus Echinacea (noun)	Compositae (noun)
small genus of North American coarse perennial herbs	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia