olive vs Olea

olive and Olea both are nouns.

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

olive (noun)	Olea (noun)
a yellow-green color of low brightness and saturation	evergreen trees and shrubs having oily one-seeded fruits
one-seeded fruit of the European olive tree usually pickled and used as a relish
evergreen tree cultivated in the Mediterranean region since antiquity and now elsewhere; has edible shiny black fruits
small ovoid fruit of the European olive tree; important food and source of oil
hard yellow often variegated wood of an olive tree; used in cabinetwork

olive (adjective)	Olea (adjective)
of a yellow-green color similar to that of an unripe olive