belt vs money belt

belt and money belt both are nouns.

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

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

belt (noun)	money belt (noun)
the act of hitting vigorously	belt with a concealed section for holding money
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)