family Compositae vs genus Gynura

family Compositae and genus Gynura both are nouns.

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

family Compositae (noun)	genus Gynura (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	genus of Old World tropical herbs: velvet plants