P.E. vs potential energy

P.E. and potential energy both are nouns.

Word	Noun	Adjective	Verb	Adverb
P.E.	Yes	No	No	No
potential energy	Yes	No	No	No

As nouns, P.E. and potential energy are synonyms defined as:

P.E. and potential energy: the mechanical energy that a body has by virtue of its position; stored energy

P.E. (noun)	potential energy (noun)
the mechanical energy that a body has by virtue of its position; stored energy	the mechanical energy that a body has by virtue of its position; stored energy