A derivative is a financial instrument, merely as an agreement between two people/parties that has a value determined by the future price of something else. Derivatives can be thought of as bets on the price of something. Derivatives can be used as an underlying asset. There are even derivatives based on weather data, such as the amount of rain or the number of sunny days in a particular region.
Investors using Derivatives for the followings :

provide leverage or gearing, such that a small movement in the underlying value can cause a …

After knowing what is investment, now lets see what instruments where people are usually invest to.
Real Estate
This includes residential or commercial properties and its involves a long-term commitment of funds and gains that are generated through rental or lease income as well as capital appreciation. In instance, residential give least risk than commercial properties.
Cash investments
Savings is considered as an investment also certificates of deposit (CDs) and treasury bills. It gives a small return rate and are risky considered with period of inflation. People shall at least have one of …