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 …

A collective investment scheme is a way of investing money with others to participate in a wider range of investments than feasible for most individual investors, and to share the costs and benefits of doing so.
Terminology varies with country but collective investment schemes are often referred to as mutual funds, investment funds, managed funds, or simply funds (note: mutual fund has a specific meaning in the US). Around the world large markets have developed around collective investment and these account for a substantial portion of all trading on major stock …

The stock or capital stock of a business entity represents the original capital paid into or invested in the business by its founders. It serves as a security for the creditors of a business since it cannot be withdrawn to the detriment of the creditors. Stock is distinct from the property and the assets of a business which may fluctuate in quantity and value.
Why Invest In Stocks?
In terms of an asset class, stocks are hard to beat. Over time, they have higher returns than bonds or real estate. There are …

Saving means income not spent. It requires reducing expenditures, put lesser money on consumption. The method of saving is by putting money aside in a bank or pension plan, deposit or buy business that can generate future return.
“Saving” differs from “savings.” The former refers to an increase in one’s assets, an increase in net worth, whereas the latter refers to one part of one’s assets, usually deposits in savings accounts, or to all of one’s assets. Saving refers to an activity occurring over time, a flow variable, whereas savings …

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 …