Pteridium aquilinum vs pasture brake

Pteridium aquilinum and pasture brake both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pteridium aquilinum	Yes	No	No	No
pasture brake	Yes	No	No	No

As nouns, Pteridium aquilinum and pasture brake are synonyms defined as:

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

Other synonyms of Pteridium aquilinum include bracken, brake.

Pteridium aquilinum (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