Part of a file ?

Tip or point - 

the end opposite to tang .

Face or side -

The broad part of the file with teeth cut on it's surface

Edge - 

The thin part of the file with a single row of parallel teeth

Heel-

The portion of the broad part without teeth .

Shoulder-

The curved part of the file separating tang from body .

Tang -

The narrow and thin part of a file which fits into the handle.

Handle - 

The part fitted to the tang for holding the file .

Ferrule - 

A protective metal ring to prevent cracking of the handle .