cudweed vs prairie sage

cudweed and prairie sage both are nouns.

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

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

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

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

cudweed (noun)	prairie sage (noun)
any of numerous plants of the genus Gnaphalium having flowers that can be dried without loss of form or color	perennial cottony-white herb of southwestern United States
any plant of the genus Filago having capitate clusters of small woolly flower heads
perennial cottony-white herb of southwestern United States