Much much complex.
Derivatives could be an aggregation of options (calls & puts), futures, stock, real estate, currency etc.
Derivatives are so complex, that many a time the owner isn't quite sure as to if the investment is making or losing money.
And a significant change (e.g., price of oil, currency devaluation) could turn a big profit into a loss, or vice versa.
Here is an example of a derivative.
Farmer Larry plants 100 acres of wheat every Spring. Each Spring he also agrees to sell that wheat at a certain price on a certain date in October, to a certain person. Farmer Larry has just entered into a derivatives contract.
There is probably a good chance your Utility bill is a derivative contract every month. If you agree to pay a fixed monthly rate, like I do, regardless of your amount of usage, then you have probably entered into a derivatives contract.