Novice has just painted the small bedroom and is having a new carpet put in.
Some of the floorboards are a bit springy and noisy. I was going to nail
them down, but was advised by neighbour to screw them instead, since he says
nails can work loose.

Can screws work loose also? Was thinking of smearing some PVA adhesive I
have over the heads. Is this the best thing to do? thanks.