American plane vs buttonwood

American plane and buttonwood both are nouns.

Word	Noun	Adjective	Verb	Adverb
American plane	Yes	No	No	No
buttonwood	Yes	No	No	No

As nouns, American plane and buttonwood are synonyms defined as:

American plane and buttonwood: very large spreading plane tree of eastern and central North America to Mexico

Other synonyms of American plane include American sycamore, Platanus occidentalis.

American plane (noun)	buttonwood (noun)
very large spreading plane tree of eastern and central North America to Mexico	very large spreading plane tree of eastern and central North America to Mexico