American lime vs Tilia americana

American lime and Tilia americana both are nouns.

Word	Noun	Adjective	Verb	Adverb
American lime	Yes	No	No	No
Tilia americana	Yes	No	No	No

As nouns, American lime and Tilia americana are synonyms defined as:

American lime and Tilia americana: large American shade tree with large dark green leaves and rounded crown

Other synonyms of American lime include American basswood.

American lime (noun)	Tilia americana (noun)
large American shade tree with large dark green leaves and rounded crown	large American shade tree with large dark green leaves and rounded crown