@ Talon
desk·top
ˈdeskˌtäp/
noun
noun: desktop; plural noun: desktops

the working surface of a desk.
denoting a piece of equipment such as a computer that is suitable for use at an ordinary desk.
"a desktop machine"
a desktop computer.

lap·top
ˈlapˌtäp/
noun
noun: laptop; plural noun: laptops; noun: laptop computer; plural noun: laptop computers

a computer that is portable and suitable for use while traveling.