aster family vs genus Buphthalmum

aster family and genus Buphthalmum both are nouns.

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

aster family (noun)	genus Buphthalmum (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	a genus of flowering plants in the aster family containing two or three species (Buphthalmum)