sloosh

As a proper noun rush

is (computing) a dialect of the language.

As a noun sloosh is

a splash or rush of water.

As a verb sloosh is

(of water) to flow with a rush.

As nouns the difference between splash and sloosh

is that splash is the sound made by an object hitting a liquid while sloosh is a splash or rush of water.

As verbs the difference between splash and sloosh

is that splash is to hit or agitate liquid so that part of it separates from the principal liquid mass while sloosh is to flow with a rush.