Net debt

Total borrowings minus cash and short-term investments. If the cash is larger than the debt, the company has net cash instead.

Simple example

A company owes $300 to lenders and holds $100 of cash, so its net debt is $200. A company with $50 of debt and $80 of cash has $30 of net cash.

$300Debt−$100Cash$200Net debtMore cash than debt? Then it's net cash.
Made-up numbers, for illustration only.