aster family vs genus Parthenium

aster family and genus Parthenium both are nouns.

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

aster family (noun)	genus Parthenium (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	small genus of North American herbs and shrubs with terminal panicles of small ray flowers