Question

difference between prokaryotic cells and eukaryotic

Answer 1

eukaryotic has a nucleus which is the most important distinction.
if it helps just remember that nucleus has the letters EU, thus nuclEUs.

prokaryotic does not have a nucleus.

Answer 2

furthermore, prokaryotic cells can be things like bacteria, blue/green algae and its DNA is not separate

while eukaryotic cells are things like organisms, and have a defined structure.
eukaryotic cells have things like the mitochondria and the ribosome.