filter

As nouns the difference between membrane and filter

is that membrane is a flexible enclosing or separating tissue forming a plane or film and separating two environments (usually in a plant or animal) while filter is a device which separates a suspended, dissolved, or particulate matter from a fluid, solution, or other substance; any device that separates one substance from another.

As a verb filter is

to sort, sift, or isolate.

As nouns the difference between distortion and filter

is that distortion is an act of distorting while filter is a device which separates a suspended, dissolved, or particulate matter from a fluid, solution, or other substance; any device that separates one substance from another.

As a verb filter is

to sort, sift, or isolate.