Atomic Energy Commission vs AEC

Atomic Energy Commission and AEC both are nouns.

Word	Noun	Adjective	Verb	Adverb
Atomic Energy Commission	Yes	No	No	No
AEC	Yes	No	No	No

As nouns, Atomic Energy Commission and AEC are synonyms defined as:

Atomic Energy Commission and AEC: a former executive agency (from 1946 to 1974) that was responsible for research into atomic energy and its peacetime uses in the United States

Atomic Energy Commission (noun)	AEC (noun)
a former executive agency (from 1946 to 1974) that was responsible for research into atomic energy and its peacetime uses in the United States	a former executive agency (from 1946 to 1974) that was responsible for research into atomic energy and its peacetime uses in the United States