Artemisia cana vs sage brush

Artemisia cana and sage brush both are nouns.

Word	Noun	Adjective	Verb	Adverb
Artemisia cana	Yes	No	No	No
sage brush	Yes	No	No	No

As nouns, sage brush is a hypernym of Artemisia cana; that is, sage brush is a word with a broader meaning than Artemisia cana:

Artemisia cana: low much-branched perennial of western United States having silvery leaves; an important browse and shelter plant
sage brush: any of several North American composite subshrubs of the genera Artemis or Seriphidium

Other hypernyms of Artemisia cana include sagebrush.

Artemisia cana (noun)	sage brush (noun)
low much-branched perennial of western United States having silvery leaves; an important browse and shelter plant	any of several North American composite subshrubs of the genera Artemis or Seriphidium