Ulmus procera vs European elm

Ulmus procera and European elm both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ulmus procera	Yes	No	No	No
European elm	Yes	No	No	No

As nouns, Ulmus procera and European elm are synonyms defined as:

Ulmus procera and European elm: broad spreading rough-leaved elm common throughout Europe and planted elsewhere

Other synonyms of Ulmus procera include English elm.

Ulmus procera (noun)	European elm (noun)
broad spreading rough-leaved elm common throughout Europe and planted elsewhere	broad spreading rough-leaved elm common throughout Europe and planted elsewhere