Money Supply M1 And M2

There are two classes of money. M1 is basically all the money that is in motion. It includes the money goes to pay for some goods, such as the electricity bill. And 'even money that is in your checking account. We only hope to call this liquid cash, money that has been active in moving the economy.

Then there is M2. Is M1 plus the following. It includes money in savings accounts and money market accounts.