NRA vs National Rifle Association

NRA and National Rifle Association both are nouns.

Word	Noun	Adjective	Verb	Adverb
NRA	Yes	No	No	No
National Rifle Association	Yes	No	No	No

As nouns, NRA and National Rifle Association are synonyms defined as:

NRA and National Rifle Association: a powerful lobby that advocates the right to own and bear arms and rejects any gun regulation by the government

NRA (noun)	National Rifle Association (noun)
a powerful lobby that advocates the right to own and bear arms and rejects any gun regulation by the government	a powerful lobby that advocates the right to own and bear arms and rejects any gun regulation by the government