cudweed vs filago

cudweed and filago both are nouns.

Word	Noun	Adjective	Verb	Adverb
cudweed	Yes	No	No	No
filago	Yes	No	No	No

As nouns, cudweed and filago are synonyms defined as:

cudweed and filago: any plant of the genus Filago having capitate clusters of small woolly flower heads

Other synonyms of cudweed include cotton rose.

cudweed (noun)	filago (noun)
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
any plant of the genus Filago having capitate clusters of small woolly flower heads
perennial cottony-white herb of southwestern United States