As nouns the difference between knifes and knifer
is that knifes is plural of lang=en while knifer is someone who sells knives.
As a verb knifes
is third-person singular of knife.
knifes
English
Noun
(head)
(nonstandard)
Usage notes
The correct plural of knife is knives
Verb
(head)
(knife)
knifer
English
Noun
(
en noun)
Someone who sells knives
someone who stabs another with a knife