is a bill the same as an invoice
Invoice An invoice, bill or tab is a commercial document issued by a seller to a buyer, relating to a sale transaction and indicating the products, quantities, and agreed prices for products or services the seller had provided the buyer.
Invoice processing Once the invoice has been approved and there have been no variances, the invoice is posted into the accounting system.[1][2][3][4]
Bill (law) A bill is proposed legislation under consideration by a legislature.[1] A bill does not become law until it is passed by the legislature and, in most cases, approved by the executive. Once a bill has been enacted into law, it is called an act of the legislature, or a statute.
United States House of Representatives The United States House of Representatives is the lower chamber of the United States Congress. The Senate is the upper chamber. Together they compose the legislature of the United States.