cedar elm vs Ulmus crassifolia

cedar elm and Ulmus crassifolia both are nouns.

Word	Noun	Adjective	Verb	Adverb
cedar elm	Yes	No	No	No
Ulmus crassifolia	Yes	No	No	No

As nouns, cedar elm and Ulmus crassifolia are synonyms defined as:

cedar elm and Ulmus crassifolia: elm of southern United States and Mexico having spreading pendulous corky branches

cedar elm (noun)	Ulmus crassifolia (noun)
elm of southern United States and Mexico having spreading pendulous corky branches	elm of southern United States and Mexico having spreading pendulous corky branches