outlet vs wall plug

outlet and wall plug both are nouns.

Word	Noun	Adjective	Verb	Adverb
outlet	Yes	No	No	No
wall plug	Yes	No	No	No

As nouns, outlet and wall plug are synonyms defined as:

outlet and wall plug: receptacle providing a place in a wiring system where current can be taken to run electrical devices

Other synonyms of outlet include electric outlet, electric receptacle, electrical outlet, wall socket.

outlet (noun)	wall plug (noun)
activity that frees or expresses creative energy or emotion	receptacle providing a place in a wiring system where current can be taken to run electrical devices
an opening that permits escape or release
a place of business for retailing goods
receptacle providing a place in a wiring system where current can be taken to run electrical devices