Many people use these terms interchangeably, but we believe there’s a subtle difference. They certainly have very similar characteristics (i.e. they're often printed on the same materials and they both stick to things). However, our simplistic way to differentiate between the two terms is "Labels SELL something while stickers SAY something". Labels are usually product-related, while stickers usually make statements like, “Great Job!” or “Vote for Joe Smith.”
Oh, and there's one other difference that you should consider. Labels are usually produced on rolls (for machine application to product containers), whereas stickers often come on sheets. If your need is for stickers on sheets, we can't help you - sorry! ... but if you're fine with rolled stickers then contact us - we may be able to make what you need.