birch family vs family Betulaceae

birch family and family Betulaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
birch family	Yes	No	No	No
family Betulaceae	Yes	No	No	No

As nouns, birch family and family Betulaceae are synonyms defined as:

birch family and family Betulaceae: monoecious trees and shrubs (including the genera Betula and Alnus and Carpinus and Corylus and Ostrya and Ostryopsis)

Other synonyms of birch family include Betulaceae.

birch family (noun)	family Betulaceae (noun)
monoecious trees and shrubs (including the genera Betula and Alnus and Carpinus and Corylus and Ostrya and Ostryopsis)	monoecious trees and shrubs (including the genera Betula and Alnus and Carpinus and Corylus and Ostrya and Ostryopsis)