What is the difference between RER and SER?

What is the difference between RER and SER?

ROUGH ENDOPLASMIC RETICULUM SMOOTH ENDOPLASMIC RETICULUM
These are rough at surface and are associated with ribosomes. These are smooth at surface and are associated with Golgi bodies.
These are responsible for the synthesis of proteins and enzymes. These are responsible for the synthesis of glycogen, lipids etc.
These provide structural framework for the cell. These take part in the synthesis of fats in adipose cells.
These also act as channels for quick transport. These can also detoxify drugs and some poisons.
These help in the synthesis of membranes. These help in the formation of rhodopsin from vitamin A.