yellow birch vs Betula leutea

yellow birch and Betula leutea both are nouns.

Word	Noun	Adjective	Verb	Adverb
yellow birch	Yes	No	No	No
Betula leutea	Yes	No	No	No

As nouns, yellow birch and Betula leutea are synonyms defined as:

yellow birch and Betula leutea: tree of eastern North America with thin lustrous yellow or grey bark

Other synonyms of yellow birch include Betula alleghaniensis.

yellow birch (noun)	Betula leutea (noun)
tree of eastern North America with thin lustrous yellow or grey bark	tree of eastern North America with thin lustrous yellow or grey bark