Computer hardware and Personal computer

Computer hardware noun - (computer science) the mechanical, magnetic, electronic, and electrical components making up a computer system.

Personal computer and computer hardware are semantically related. In some cases you can use "Personal computer" instead a noun phrase "Computer hardware".

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

Computer hardware and personal computer are semantically related. Sometimes you can replace phrase "Computer hardware" with "Personal computer", this phrases are similar.