The differences between opioid analgesics and NSAIDs as analgesic agents?

My name is sharmake kaytoon:

As i think the difference between them is:

Opiod analgesics: is to reduce a pain which is chronic or very severe, and

the drugs that reduce this pain occur on their opiod

receptors in the central nervous system.

NSAIDS: These drugs also have some affect of reducing pain but their target of reducing pain is not like that of opiod analgesic drugs, but they block the synthesis of prostaglandins and so that the nerve terminal will not conduct any pain to the CNS.....