slasher vs assaulter

slasher and assaulter both are nouns.

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

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

Other hypernyms of slasher include aggressor, assailant, attacker.

slasher (noun)	assaulter (noun)
a weapon (a sword or dagger) used for slashing	someone who attacks
someone who slashes another person