Is windows operating system, is called a partition

No, the Windows operating system itself is not called a partition. In computer terminology, a **partition** refers to a section of a hard drive or solid-state drive that is divided to create separate storage areas. Each partition can be formatted with a file system and can be used to store different operating systems, applications, or data. Windows is an operating system developed by Microsoft. It can be installed on a partition of a storage device, but the term "partition" refers specifically to the storage space, not the operating system itself. You can have multiple partitions (for example, one for Windows and another for another operating system like Linux) on a single hard drive or SSD. So, while Windows may exist on a partition, it is not correct to refer to Windows as a partition.