Ulmus rubra vs slippery elm

Ulmus rubra and slippery elm both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ulmus rubra	Yes	No	No	No
slippery elm	Yes	No	No	No

As nouns, Ulmus rubra and slippery elm are synonyms defined as:

Ulmus rubra and slippery elm: North American elm having rough leaves that are red when opening; yields a hard wood

Other synonyms of Ulmus rubra include red elm.

Ulmus rubra (noun)	slippery elm (noun)
North American elm having rough leaves that are red when opening; yields a hard wood	North American elm having rough leaves that are red when opening; yields a hard wood