Pain is the feeling of great discomfort you have, for example when you have been hurt or when you are ill.
...a bone disease that caused excruciating pain...
I felt a sharp pain in my lower back. ...chest pains, back pain.
Pain is the feeling of unhappiness that you have when something unpleasant or upsetting happens.
...grey eyes that seemed filled with pain.
An ache is a steady, fairly strong pain in a part of your body.
Poor posture can cause neck ache, headaches and breathing problems.
...backache, headache, heartache, stomach ache.
If part of your body is sore, it causes you pain and discomfort.
It's years since I've had a sore throat like I did last night...
My chest is still sore from the surgery.
A sore is a painful place on the body where the skin is infected.