belt vs whack

belt and whack both are nouns.

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

As nouns, belt and whack are synonyms defined as:

Other synonyms of belt include knock, rap, whang.

belt (noun)	whack (noun)
the act of hitting vigorously	the act of hitting vigorously
a band to tie or buckle around the body (usually at the waist)	the sound made by a sharp swift blow
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)