event vs wallop

event and wallop both are nouns.

Word	Noun	Adjective	Verb	Adverb
event	Yes	No	No	No
wallop	Yes	No	Yes	No

As nouns, wallop is a hyponym of event; that is, wallop is a word with a more specific, narrower meaning than event:

event (noun)	wallop (noun)
something that happens at a given place and time	a severe blow
a phenomenon located at a single point in space-time; the fundamental observational entity in relativity theory	a forceful consequence; a strong effect
a phenomenon that follows and is caused by some previous phenomenon
a special set of circumstances

event (verb)	wallop (verb)
	defeat soundly and utterly
	strike hard