genus Ilex vs Ilex

genus Ilex and Ilex both are nouns.

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

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

genus Ilex and Ilex: a large genus of dicotyledonous trees and shrubs of the family Aquifoliaceae that have small flowers and berries (including hollies)

genus Ilex (noun)	Ilex (noun)
a large genus of dicotyledonous trees and shrubs of the family Aquifoliaceae that have small flowers and berries (including hollies)	a large genus of dicotyledonous trees and shrubs of the family Aquifoliaceae that have small flowers and berries (including hollies)