Wikipedia
Installation (or setup) of a computer program (including device drivers and plugins), is the act of making the program ready for execution Installation refers to the particular configuration of a software or hardware with a view to making it usable with the computer A soft or digital copy of the piece of software (program) is needed to install it There are different processes of installing a piece of software (program) Because the process varies for each program and each computer, programs (including operating systems) often come with an installer, a specialised program responsible for doing whatever is needed (see below) for the installation
Installation_(computer_programs) - Wikipedia, the free encyclopedia