family Compositae vs genus Stevia

family Compositae and genus Stevia both are nouns.

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

family Compositae (noun)	genus Stevia (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	genus of shrubs and herbs of tropical and warm Americas