they r exactly the same but they called the PC a Desktop coz its not portable so they can make a difference between it and a laptop

Yes it is the same…the only thing different is a desktop sits on the desk or floor or anywhere whereas a laptop is portable! Both would be personal computers whereas would be different if it was a buisness or office computer.

Same exact thing. When you say PC, you tend to refer to a computer running Microsoft Windows, but that’s just a marketing thing.