beech family vs Fagaceae

beech family and Fagaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
beech family	Yes	No	No	No
Fagaceae	Yes	No	No	No

As nouns, beech family and Fagaceae are synonyms defined as:

beech family and Fagaceae: chiefly monoecious trees and shrubs: beeches, chestnuts, oaks; genera Castanea, Castanopsis, Chrysolepis, Fagus, Lithocarpus, Nothofagus, Quercus

Other synonyms of beech family include family Fagaceae.

beech family (noun)	Fagaceae (noun)
chiefly monoecious trees and shrubs: beeches, chestnuts, oaks; genera Castanea, Castanopsis, Chrysolepis, Fagus, Lithocarpus, Nothofagus, Quercus	chiefly monoecious trees and shrubs: beeches, chestnuts, oaks; genera Castanea, Castanopsis, Chrysolepis, Fagus, Lithocarpus, Nothofagus, Quercus