The Operating System is a collection of many small programs, collectively it is known as Package. While kernel is just a part of the Operating System. However kernel is the most important and basic part of an OS and can be considered as the skeleton of OS. Architecture of Kernel - Wikipedia An OS is a collection of small programs like.... 1. Program to Read and Write files in memory. 2. Program to Rename a file. 3. Program to create or delete a file or folder. 4. Program to show an icon. 5. Program for some application like calendar and clock 6. Different programs for animation and effects in a GUI based OS etc. If you are running a GUI (Graphics User Interface) based OS, then programs written for the graphics are seprate. Program for clock-like application is separate and programs for basic functionality of OS are seprate. All these programs are combined to make a complete Packa...