Artemisia ludoviciana vs cudweed

Artemisia ludoviciana and cudweed both are nouns.

Word	Noun	Adjective	Verb	Adverb
Artemisia ludoviciana	Yes	No	No	No
cudweed	Yes	No	No	No

As nouns, Artemisia ludoviciana and cudweed are synonyms defined as:

Artemisia ludoviciana and cudweed: perennial cottony-white herb of southwestern United States

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

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