Computer & Workstation
Originally it was simple.
A workstation belongs to the company and personal computer belongs to the person.
Workstations tend to be much more powerful, because the people who really needed them and the people who do not have a computer at all, they had a terminal. Workstations and things were running high power and the UNIX system and Star Office and VMS operating area that only businesses could afford. Personal computers were Bitty boxes at home or, as the '70s drew to a close and the 80 entered, small businesses that thought (sometimes successfully, often wrongly) that the terminals and a system of Supermicro mini or time-sharing were more than a bunch of PC.
Thus, the workstation has come to mean "the computer graphics and lots of expensive local CPU and disk." These days, it's a game machine