Computer programmers are generally more code focused. Software Engineers are generally more product focused. You want the two to work together to build a good code base and an equivalently good product. You don't need a formal education in either of the two. Self teaching, and proving yourself in an interview, will be enough considering today's demand.

It usually takes longer, customs/shipping companies send you a notice when they lose your product.

It's like ordering an amazon package. You put in the order online, go about your day, and upon receiving the package at your house you can then use it. The order is your promise, the "receiving" is your promise .then(), and the "using" is the function inside your .then( function (data) { / do something / } ).