genus Ulmus vs elm

genus Ulmus and elm both are nouns.

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

genus Ulmus (noun)	elm (noun)
type genus of family Ulmaceae; deciduous trees having simple serrate leaves; widely distributed in temperate regions	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