tomahawk vs weapon

tomahawk and weapon both are nouns.

Word	Noun	Adjective	Verb	Adverb
tomahawk	Yes	No	Yes	No
weapon	Yes	No	No	No

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

tomahawk: weapon consisting of a fighting ax; used by North American Indians
weapon: any instrument or instrumentality used in fighting or hunting

Other hypernyms of tomahawk include arm, weapon system.

tomahawk (noun)	weapon (noun)
weapon consisting of a fighting ax; used by North American Indians	any instrument or instrumentality used in fighting or hunting
	a means of persuading or arguing

tomahawk (verb)	weapon (verb)
cut with a tomahawk
kill with a tomahawk