PA vs Keystone State

PA and Keystone State both are nouns.

Word	Noun	Adjective	Verb	Adverb
PA	Yes	No	No	No
Keystone State	Yes	No	No	No

As nouns, PA and Keystone State are synonyms defined as:

PA and Keystone State: a Mid-Atlantic state; one of the original 13 colonies, with capital Harrisburg

Other synonyms of PA include Pa., Pennsylvania.

PA (noun)	Keystone State (noun)
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
a Mid-Atlantic state; one of the original 13 colonies, with capital Harrisburg