As nouns the difference between quim and cosh
is that
quim is the female genitalia; the vulva while
cosh is a weapon made of leather-covered metal similar to a blackjack.
As an adjective quim
is affectedly nice, prim.
As a verb cosh is
to strike with a weapon of this kind.
As a symbol cosh is
the symbol of the hyperbolic function hyperbolic cosine.