Asteraceae vs sage brush

Asteraceae and sage brush both are nouns.

Word	Noun	Adjective	Verb	Adverb
Asteraceae	Yes	No	No	No
sage brush	Yes	No	No	No

Asteraceae (noun)	sage brush (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	any of several North American composite subshrubs of the genera Artemis or Seriphidium