olive family vs genus Forestiera

olive family and genus Forestiera both are nouns.

Word	Noun	Adjective	Verb	Adverb
olive family	Yes	No	No	No
genus Forestiera	Yes	No	No	No

olive family (noun)	genus Forestiera (noun)
trees and shrubs having berries or drupes or capsules as fruits; sometimes placed in the order Oleales: olive, ash, jasmine, privet, lilac	genus of often spiny American shrubs and trees