whack vs belt

whack and belt both are nouns.

Word	Noun	Adjective	Verb	Adverb
whack	Yes	No	Yes	No
belt	Yes	No	Yes	No

As nouns, whack and belt are synonyms defined as:

Other synonyms of whack include knock, rap, whang.

whack (noun)	belt (noun)
the act of hitting vigorously	the act of hitting vigorously
the sound made by a sharp swift blow	a band to tie or buckle around the body (usually at the waist)
	endless loop of flexible material between two rotating shafts or pulleys
	ammunition (usually of small caliber) loaded in flexible linked strips for use in a machine gun
	a vigorous blow
	an elongated region where a specific condition or characteristic is found
	a path or strip (as cut by one course of mowing)