My guide on...
What is software?
Software processes the information you want to function. Examples of software are; operating system, utilities, user interface and application software.
Software examples for computers is windows, for iPad,s is iOS etc..
Operating system is the basic operations of the computer systems, like Android, iOS, Windows.
Application software is personal things you download and use yourself, like app's, application. E.g; if you want to edit a photo you use an app called Photoshop.