celebration vs diversion

celebration and diversion both are nouns.

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

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

Other hypernyms of celebration include recreation.

celebration (noun)	diversion (noun)
any joyous diversion	an activity that diverts or amuses or stimulates
the public performance of a sacrament or solemn ceremony with all appropriate ritual	a turning aside (of your course or attention or concern)
a joyful occasion for special festivities to mark some happy event	an attack calculated to draw enemy defense away from the point of the principal attack