In Polish any floppy disk was "dyskietka" despite the size (8/5.25/3.5/etc.).
Common jargon phrase was "flop".
You could hear "duża dyskietka" (big floppy) for 5.25" and "mała dyskietka" (small floppy) for 3.5" one. No idea was there a phrase for 8" ones.