compass flower vs aster family

compass flower and aster family both are nouns.

Word	Noun	Adjective	Verb	Adverb
compass flower	Yes	No	No	No
aster family	Yes	No	No	No

compass flower (noun)	aster family (noun)
any of several plants having leaves so arranged on the axis as to indicate the cardinal points of the compass	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia