The real wordsTheory
Cash market and derivative market
The slide's own contrast, and it is the cleanest way to say what a derivative market is not.
Cash or spot market: actual market prices at the time of the transaction, immediate delivery, not suited for hedging, provides a liquidity advantage.
Derivative market: the financial market for instruments derived from other assets, divided into exchange-traded and over-the-counter halves.
The professor's line: cash markets trade assets, derivative markets trade contracts.