Do you mean you have wooden doors and frames?
Are these internal doors, or external ones subject to rain or damp?
Is there a regular gap all the way round the door, and is it about 4mm, or is it different top, hinge side, lock side?
Please show photos of
The whole door and frame to give an idea what sort it is
The rubbing part where the door hits the frame (door shut and open)
The hinge and its screws (close up)
Is your door 35mm thick, or 44mm?