Corylus vs genus Corylus

Corylus and genus Corylus both are nouns.

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

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

Corylus and genus Corylus: deciduous monoecious nut-bearing shrubs of small trees: hazel; sometimes placed in the subfamily or family Corylaceae

Corylus (noun)	genus Corylus (noun)
deciduous monoecious nut-bearing shrubs of small trees: hazel; sometimes placed in the subfamily or family Corylaceae	deciduous monoecious nut-bearing shrubs of small trees: hazel; sometimes placed in the subfamily or family Corylaceae