cotton rose vs filago

cotton rose and filago both are nouns.

Word	Noun	Adjective	Verb	Adverb
cotton rose	Yes	No	No	No
filago	Yes	No	No	No

As nouns, cotton rose and filago are synonyms defined as:

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

Other synonyms of cotton rose include cudweed.

cotton rose (noun)	filago (noun)
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
Chinese shrub or small tree having white or pink flowers becoming deep red at night; widely cultivated; naturalized in southeastern United States