DoI vs Department of the Interior

DoI and Department of the Interior both are nouns.

Word	Noun	Adjective	Verb	Adverb
DoI	Yes	No	No	No
Department of the Interior	Yes	No	No	No

As nouns, DoI and Department of the Interior are synonyms defined as:

DoI and Department of the Interior: the United States federal department charged with conservation and the development of natural resources; created in 1849

Other synonyms of DoI include Interior, Interior Department.

DoI (noun)	Department of the Interior (noun)
the United States federal department charged with conservation and the development of natural resources; created in 1849	the United States federal department charged with conservation and the development of natural resources; created in 1849