aster family vs genus Vernonia

aster family and genus Vernonia both are nouns.

Word	Noun	Adjective	Verb	Adverb
aster family	Yes	No	No	No
genus Vernonia	Yes	No	No	No

aster family (noun)	genus Vernonia (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	genus of New World tropical herbs or shrubs with terminal cymose heads of tubular flowers