genus Liatris vs aster family

genus Liatris and aster family both are nouns.

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

genus Liatris (noun)	aster family (noun)
genus of perennial North American herbs with aromatic usually cormous roots	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia