slasher vs weapon

slasher and weapon both are nouns.

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

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

Other hypernyms of slasher include arm, weapon system.

slasher (noun)	weapon (noun)
a weapon (a sword or dagger) used for slashing	any instrument or instrumentality used in fighting or hunting
someone who slashes another person	a means of persuading or arguing