genus Grindelia vs aster family

genus Grindelia and aster family both are nouns.

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

genus Grindelia (noun)	aster family (noun)
large genus of coarse gummy herbs of western North and Central America	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia