hatchet vs weapon

hatchet and weapon both are nouns.

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

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

Other hypernyms of hatchet include arm, weapon system.

hatchet (noun)	weapon (noun)
a small ax with a short handle used with one hand (usually to chop wood)	any instrument or instrumentality used in fighting or hunting
weapon consisting of a fighting ax; used by North American Indians	a means of persuading or arguing