what's the difference between ..?

I think the difference is in both how you perceive yourself and how others perceive you. When you are confident, you believe you are as worthy as anyone or everyone else and others do not see you as thinking you are better than them. But when you are stuck up, you believe you are better than others, and others pick up on this and are turned off by it.

well if your confident your alot less selfish and your proud of yourself. Being stuckup is like being self absorbed and selfish and stuff..

Being confident is being self-assured and is a very attractive trait.

Being stuck-up is thinking you're better than others.

Huge difference, but unfortunately, often confused.

being confident:you have high self esteem

being stuckup:you could care less about anyone

stuck up is conceited and snobbish

confident is full of conviction, certain, having or showing assurance and self-reliance, trustful

Having faith in yourself as apposed to liking yourself a little too much.

nothing much, people that are confident always seem to be stuck-up

attitude

dunno