ESP vs E.S.P.

ESP and E.S.P. both are nouns.

Word	Noun	Adjective	Verb	Adverb
ESP	Yes	No	No	No
E.S.P.	Yes	No	No	No

As nouns, ESP and E.S.P. are synonyms defined as:

ESP and E.S.P.: apparent power to perceive things that are not present to the senses

Other synonyms of ESP include clairvoyance, extrasensory perception, second sight.

ESP (noun)	E.S.P. (noun)
apparent power to perceive things that are not present to the senses	apparent power to perceive things that are not present to the senses