The host OS interacts with the hardware.

The guest OS interacts with the virtual machine.

is a single host operating system.

There may be one or more guest operating systems.

Host OS is installed on the computer system.

The guest OS is installed in a virtual machine.

Host operating system is a software installed on a computer that interacts with the underlying hardware.

Guest operating system is a software installed in a virtual machine.

Guest OS runs on a virtual machine.

It runs directly on the hardware.

It runs on a virtual machine.

The guest operating system is the software installed and running on the virtual machine.

Operating system is a system software, which is also known as OS.