P.A. vs PA

P.A. and PA both are nouns.

Word	Noun	Adjective	Verb	Adverb
P.A.	Yes	No	No	No
PA	Yes	No	No	No

As nouns, P.A. and PA are synonyms defined as:

P.A. and PA: an electronic amplification system used as a communication system in public areas

Other synonyms of P.A. include P.A. system, PA system, public address system.

P.A. (noun)	PA (noun)
an electronic amplification system used as a communication system in public areas	an electronic amplification system used as a communication system in public areas
	a Mid-Atlantic state; one of the original 13 colonies, with capital Harrisburg