How to understand the nomenclature of dbGet commands?

Hello everyone

A beginner here. I am trying to understand dbget commands. But it would really help me, if I could get a source which tells me how they have given the names to the commands. I'm not able to understand what are sWire, Hinsts, terms, etc. I see that the detailed explanation is not available in cadence text command reference website. So could you please tell how can I understand them ?

Thank you