outlet vs activity

outlet and activity both are nouns.

Word	Noun	Adjective	Verb	Adverb
outlet	Yes	No	No	No
activity	Yes	No	No	No

As nouns, activity is a hypernym of outlet; that is, activity is a word with a broader meaning than outlet:

outlet (noun)	activity (noun)
activity that frees or expresses creative energy or emotion	any specific behavior
an opening that permits escape or release	the trait of being active; moving or acting rapidly and energetically
a place of business for retailing goods	an organic process that takes place in the body
receptacle providing a place in a wiring system where current can be taken to run electrical devices	a process existing in or produced by nature (rather than by the intent of human beings)
	the state of being active
	(chemistry) the capacity of a substance to take part in a chemical reaction