genus Verbesina vs Compositae

genus Verbesina and Compositae both are nouns.

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

genus Verbesina (noun)	Compositae (noun)
herbs and shrubs of warm North America to Mexico; includes plants formerly placed in genus Actinomeris	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia