Bill and invoice both refer to a document that is requiring money to be paid for goods or services provided.
In everyday conversation, we usually talk about bills:
The electrical company sends you an electrical bill.
The phone company sends you a phone bill.
After you get treated in a hospital, if you don't have health insurance, you'll have a lot of medical bills to pay.
When talking about a business or professional relationship, then we usually use the word invoice:
A consultant who gave advice to a company would then send the company an invoice (requiring payment for his time).
When a factory sends products to a store, it will also send the store an invoice requiring payment for those products.
Both bills and invoices are sent BEFORE payment. They are requiring the payment to be made. A receipt, on the other hand, is sent AFTER payment. It is the confirmation and proof that the payment was made.
After you buy something in a supermarket, you get a receipt.
After the store pays the factory for the products, the factory will provide a receipt.
Ice racing includes a motorcycle class which is the equivalent of Speedway on ice. Bikes race anti clockwise around oval tracks between 260 and 425 metres in length. The race structure and scoring are similar to Speedway.