sweet birch vs Betula lenta

sweet birch and Betula lenta both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweet birch	Yes	No	No	No
Betula lenta	Yes	No	No	No

As nouns, sweet birch and Betula lenta are synonyms defined as:

sweet birch and Betula lenta: common birch of the eastern United States having spicy brown bark yielding a volatile oil and hard dark wood used for furniture

Other synonyms of sweet birch include black birch, cherry birch.

sweet birch (noun)	Betula lenta (noun)
common birch of the eastern United States having spicy brown bark yielding a volatile oil and hard dark wood used for furniture	common birch of the eastern United States having spicy brown bark yielding a volatile oil and hard dark wood used for furniture