System Software
System software is a set of programs that manage the resources of a computer system, so that they are used in an optimal fashion, provide routine services such as copying data from one file to another and assist in the development of applications programs.. The software that comes with a computer system, or more specifically, the operating system. Eg-windows 98, windows Xp, Linux.
Application software.
Application software on the other hand, performs specific tasks for the computer user. Eg- MS Office, Tally, CAD .
Workstation
A high-powered computer, one step below a minicomputer and a step above a microcomputer. The term often refers to fairly powerful dual-processor computers used to generate 3D images or manipulate 2D images or sound. Often workstations require very powerful graphics setups.
Bug
This is commonly an error in design or programming in a hardware device or piece of software. The effects of a bug may be as harmless as an extra graphic on the screen, or as harmful as a system crash or loss of data. The first computer “bug” was a real bug, a moth, in fact, that was stuck between relays back in an early computer in 1945