Ulmus glabra vs elm

Ulmus glabra and elm both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ulmus glabra	Yes	No	No	No
elm	Yes	No	No	No

As nouns, elm is a hypernym of Ulmus glabra; that is, elm is a word with a broader meaning than Ulmus glabra:

Ulmus glabra: Eurasian elm often planted as a shade tree
elm: any of various trees of the genus Ulmus: important timber or shade trees

Other hypernyms of Ulmus glabra include elm tree.

Ulmus glabra (noun)	elm (noun)
Eurasian elm often planted as a shade tree	any of various trees of the genus Ulmus: important timber or shade trees
	hard tough wood of an elm tree; used for e.g. implements and furniture