diversion vs activity

diversion and activity both are nouns.

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

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

diversion (noun)	activity (noun)
an activity that diverts or amuses or stimulates	any specific behavior
a turning aside (of your course or attention or concern)	the trait of being active; moving or acting rapidly and energetically
an attack calculated to draw enemy defense away from the point of the principal attack	an organic process that takes place in the body
	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