Betula fontinalis vs water birch

Betula fontinalis and water birch both are nouns.

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

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

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

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

Betula fontinalis (noun)	water 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