genus Ulmus vs Ulmus

genus Ulmus and Ulmus both are nouns.

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

As nouns, genus Ulmus and Ulmus are synonyms defined as:

genus Ulmus and Ulmus: type genus of family Ulmaceae; deciduous trees having simple serrate leaves; widely distributed in temperate regions

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