2.What money institutions can you mention?

This is for example banks, insurance companies, mutual funds (unit trusts in the UK) and pension funds who may, of course, be investing the money of private individuals indirectly.

The markets they invest in include the money and currency markets, stock markets for shares (also known as equities), commodities markets for anything from gold to pork bellies (used for making bacon), and property (buildings and land).

Let’s stop on several institutions.

The most famous money institution in every country is bank. Bank is a financial institution that acts as a payment agent for customers, and borrows and lends money. Banks borrow money by accepting funds deposited on current account, accepting term deposits and by issuing debt securities such as banknotes and bonds. Banks lend money by making advances to customers on current account, by making installment loans, and by investing in marketable debt securities and other forms of lending.

A mutual fund is a professionally-managed firm of collective investments that pools money from many investors and invests it in stocks, bonds, short-term money market instruments, or other securities. In a mutual fund, the fund manager, trades the fund's underlying securities, realizing capital gains or losses, and collects the dividend or interest income.