OIS vs Treasury Department

OIS and Treasury Department both are nouns.

Word	Noun	Adjective	Verb	Adverb
OIS	Yes	No	No	No
Treasury Department	Yes	No	No	No

OIS (noun)	Treasury Department (noun)
agency that oversees the intelligence relationships of the Treasury's offices and bureaus and provides a link between the Intelligence Community and officials responsible for international economic policy	the federal department that collects revenue and administers federal finances; the Treasury Department was created in 1789