Debris and Flotsam

Debris noun - Discarded or useless material.

Flotsam is a synonym for debris in rubble topic. In some cases you can use "Flotsam" instead a noun "Debris".

Flotsam noun - The portion or bits of something left over or behind after it has been destroyed.

Debris is a synonym for flotsam in rubbish topic. You can use "Debris" instead a noun "Flotsam", if it concerns topics such as junk, rubble.