family Betulaceae vs birch family

family Betulaceae and birch family both are nouns.

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

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

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

Other synonyms of family Betulaceae include Betulaceae.

family Betulaceae (noun)	birch family (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)