Olea vs genus Olea

Olea and genus Olea both are nouns.

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

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

Olea and genus Olea: evergreen trees and shrubs having oily one-seeded fruits

Olea (noun)	genus Olea (noun)
evergreen trees and shrubs having oily one-seeded fruits	evergreen trees and shrubs having oily one-seeded fruits