white basswood vs cottonwood

white basswood and cottonwood both are nouns.

Word	Noun	Adjective	Verb	Adverb
white basswood	Yes	No	No	No
cottonwood	Yes	No	No	No

As nouns, white basswood and cottonwood are synonyms defined as:

white basswood and cottonwood: American basswood of the Allegheny region

Other synonyms of white basswood include Tilia heterophylla.

white basswood (noun)	cottonwood (noun)
American basswood of the Allegheny region	any of several North American trees of the genus Populus having a tuft of cottony hairs on the seed
	American basswood of the Allegheny region