Customs Service vs Treasury Department

Customs Service and Treasury Department both are nouns.

Word	Noun	Adjective	Verb	Adverb
Customs Service	Yes	No	No	No
Treasury Department	Yes	No	No	No

Customs Service (noun)	Treasury Department (noun)
the agency of the Treasury Department that enforces import tariffs	the federal department that collects revenue and administers federal finances; the Treasury Department was created in 1789