Central processing unit and Personal computer

Central processing unit noun - (computer science) the part of a computer (a microprocessor chip) that does most of the data processing.

Personal computer and central processing unit are semantically related. In some cases you can use "Personal computer" instead a noun phrase "Central processing unit".

Personal computer noun - A small digital computer based on a microprocessor and designed to be used by one person at a time.

Central processing unit and personal computer are semantically related. You can use "Central processing unit" instead a noun phrase "Personal computer".