Betula leutea vs yellow birch

Betula leutea and yellow birch both are nouns.

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

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

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

Other synonyms of Betula leutea include Betula alleghaniensis.

Betula leutea (noun)	yellow birch (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