Betula fontinalis vs swamp birch

Betula fontinalis and swamp birch both are nouns.

Word	Noun	Adjective	Verb	Adverb
Betula fontinalis	Yes	No	No	No
swamp birch	Yes	No	No	No

As nouns, Betula fontinalis and swamp birch are synonyms defined as:

Betula fontinalis and swamp birch: birch of western United States resembling the paper birch but having brownish bark

Other synonyms of Betula fontinalis include mountain birch, water birch, Western birch, Western paper birch.

Betula fontinalis (noun)	swamp birch (noun)
birch of western United States resembling the paper birch but having brownish bark	birch of western United States resembling the paper birch but having brownish bark