watchband vs wristband

watchband and wristband both are nouns.

Word	Noun	Adjective	Verb	Adverb
watchband	Yes	No	No	No
wristband	Yes	No	No	No

As nouns, watchband and wristband are synonyms defined as:

watchband and wristband: a band of cloth or leather or metal links attached to a wristwatch and wrapped around the wrist

Other synonyms of watchband include bracelet, watch bracelet, watchstrap.

watchband (noun)	wristband (noun)
a band of cloth or leather or metal links attached to a wristwatch and wrapped around the wrist	band consisting of a part of a sleeve that covers the wrist
	a band of cloth or leather or metal links attached to a wristwatch and wrapped around the wrist