fens

As a proper noun fens

is a marshy area in eastern england.

As a verb fends is

(fend).

As nouns the difference between lens and fens

is that lens is an object, usually made of glass, that focuses or defocuses the light that passes through it while fens is plural of fen.

As a verb lens

is to film, shoot.

As a proper noun Fens is

a marshy area in eastern England.

As an adjective marshy

is of, or resembling a marsh; boggy.

As a proper noun fens is

a marshy area in eastern england.