As nouns the difference between sharer and sharper
is that sharer
is one who shares while sharper
is (dated) a swindler; a cheat; a professional gambler who makes his living by cheating.
As an adjective sharper is
Other Comparisons: What's the difference?
One who shares.
(informal) A dish at a restaurant, etc. intended to be shared between several people.
- Can we order the seafood platter as a sharer ?
(dated) a swindler; a cheat; a professional gambler who makes his living by cheating.