what is LINUX? & what is KERNEL?

what is LINUX?
          Linux is an operating system and it is the base software that makes a computer to interact with the user. Linux is the KERNEL which means, the core component of the operating system and it is a free operating system. 
what is KERNEL?
       If you think an operating system as a nut, the shell is a part  that we use. The kernel that is the central part of the operating system is the core that talks to the computer's hardware.

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