an extremely powerful computer

Hardware- The monitor you are looking at, the box your computer is in, the parts inside that box, the wires that connect your computer to another computer and the network on which the internet is found is all contained inside hardware. Essentially the wires, plastic and metal.

Software- Programs on your computer, Microsoft word, Windows 7, the web browser you are using to ask this question, the website on which you are looking at the answer to this question, the internet.

Android is an "operating system" - that is software - that can run on many manufacturers' computer hardware. There is no such thing as "an Android Box".

A white box system

computer hardware