Central processing unit and Disk drive

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

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

Disk drive noun - Computer hardware that holds and spins a magnetic or optical disk and reads and writes information on it.

Central processing unit and disk drive are semantically related. You can use "Central processing unit" instead a noun phrase "Disk drive".