How is a checking account different than a saving account?

Both Checking Accounts and Savings Accounts are basic types of bank accounts provided by banks to their customers. The difference is:

a. There are limitations on the number of trasactions that can be performed in a savings account on a per month basis whereas for checking accounts there are no limitations

b. The interest rate offered by banks on savings account is much higher than what is offered on checking accounts because banks offer almost no interest in them