Bureau of Customs vs Customs Bureau

Bureau of Customs and Customs Bureau both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bureau of Customs	Yes	No	No	No
Customs Bureau	Yes	No	No	No

As nouns, Bureau of Customs and Customs Bureau are synonyms defined as:

Bureau of Customs and Customs Bureau: the agency of the Treasury Department that enforces import tariffs

Other synonyms of Bureau of Customs include Customs Service, USCB.

Bureau of Customs (noun)	Customs Bureau (noun)
the agency of the Treasury Department that enforces import tariffs	the agency of the Treasury Department that enforces import tariffs