genus Heterotheca vs aster family

genus Heterotheca and aster family both are nouns.

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

genus Heterotheca (noun)	aster family (noun)
genus of yellow-flowered North American herbs	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia