DOE vs Energy

DOE and Energy both are nouns.

Word	Noun	Adjective	Verb	Adverb
DOE	Yes	No	No	No
Energy	Yes	No	No	No

As nouns, DOE and Energy are synonyms defined as:

DOE and Energy: the federal department responsible for maintaining a national energy policy of the United States; created in 1977

Other synonyms of DOE include Department of Energy, Energy Department.

DOE (noun)	Energy (noun)
the federal department responsible for maintaining a national energy policy of the United States; created in 1977	the federal department responsible for maintaining a national energy policy of the United States; created in 1977