stun baton vs weapon

stun baton and weapon both are nouns.

Word	Noun	Adjective	Verb	Adverb
stun baton	Yes	No	No	No
weapon	Yes	No	No	No

As nouns, weapon is a hypernym of stun baton; that is, weapon is a word with a broader meaning than stun baton:

stun baton: a weapon designed to disable a victim temporarily by delivering a nonlethal high-voltage electric shock
weapon: any instrument or instrumentality used in fighting or hunting

Other hypernyms of stun baton include arm, weapon system.

stun baton (noun)	weapon (noun)
a weapon designed to disable a victim temporarily by delivering a nonlethal high-voltage electric shock	any instrument or instrumentality used in fighting or hunting
	a means of persuading or arguing