What is the difference between customer and consumer?

consumer is a person who consumes or uses something. A customer is a person who has purchased something or engaged in some form of exchange transaction.A customer can be a consumer, but a consumer does not necessarily need to be a customer. Example: a child could be a consumer of breakfast cereal, while the child's mother would 

A customer buys products from businesses, while a consumer uses the business products. You can actually be both a customer and a consumer in a business transaction

I WILL GIVEYOU THE EXAMOLE OF HOME, WHERE PARENTS BUY THINGS FOR THERE CHILDREN AND CHILDREN USE IT.SO PARENTS ARE CUSTOMER AND CHILDREN ARE CONSUMERS.