The correct answer is software, hardware.Software is a set of instructions, data, or programs used to operate computers and execute specific tasks.It is the opposite of hardware, which describes the physical aspects of a computer.It is a generic term used to refer to applications, scripts, and programs that run on a device.It can be thought of as the variable part of a computer, while the hardware is the invariable part. The two main categories of software are application software and system software.An application is a software that fulfills a specific need or performs tasks.System software is designed to run a computer's hardware and provides a platform for applications to run on top of it.In a computer, hardware refers to the physical parts of a computer and related devices.Internal hardware devices include motherboards, hard drives, and RAM.External hardware devices include monitors, keyboards, mice, printers, and scanners.The internal hardware parts of a computer are often referred to as components, while external hardware devices are usually called peripherals. Together, they all fall under the category of computer hardware.