white sage vs prairie sage

white sage and prairie sage both are nouns.

Word	Noun	Adjective	Verb	Adverb
white sage	Yes	No	No	No
prairie sage	Yes	No	No	No

As nouns, white sage and prairie sage are synonyms defined as:

white sage and prairie sage: perennial cottony-white herb of southwestern United States

Other synonyms of white sage include Artemisia gnaphalodes, Artemisia ludoviciana, cudweed, western mugwort.

white sage (noun)	prairie sage (noun)
perennial cottony-white herb of southwestern United States	perennial cottony-white herb of southwestern United States