family Compositae vs genus Gnaphalium

family Compositae and genus Gnaphalium both are nouns.

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

family Compositae (noun)	genus Gnaphalium (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	large widely distributed genus of coarse hairy herbs with whitish involucres