bracken vs pasture brake

bracken and pasture brake both are nouns.

Word	Noun	Adjective	Verb	Adverb
bracken	Yes	No	No	No
pasture brake	Yes	No	No	No

As nouns, bracken and pasture brake are synonyms defined as:

bracken and pasture brake: large coarse fern often several feet high; essentially weed ferns; cosmopolitan

Other synonyms of bracken include brake, Pteridium aquilinum.

bracken (noun)	pasture brake (noun)
large coarse fern often several feet high; essentially weed ferns; cosmopolitan	large coarse fern often several feet high; essentially weed ferns; cosmopolitan
fern of southeastern Asia; not hardy in cold temperate regions