family Asteraceae vs genus Stevia

family Asteraceae and genus Stevia both are nouns.

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

family Asteraceae (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