bellyband vs fastening

bellyband and fastening both are nouns.

Word	Noun	Adjective	Verb	Adverb
bellyband	Yes	No	No	No
fastening	Yes	No	No	No

As nouns, fastening is a hypernym of bellyband; that is, fastening is a word with a broader meaning than bellyband:

bellyband: a strap around the belly of a draft animal holding the shafts of a wagon
fastening: restraint that attaches to something or holds something in place

Other hypernyms of bellyband include fastener, fixing, holdfast.

bellyband (noun)	fastening (noun)
a strap around the belly of a draft animal holding the shafts of a wagon	the act of fastening things together
a cloth band that is worn around the waist (as on infants until the navel has healed)	restraint that attaches to something or holds something in place