Revenue
Part of speech: noun
Definition: The income returned by an investment The total income received from a given source All income generated for some political entity's treasury by taxation and other means The total sales; turnover. The net revenue, net sales.
Example sentence: Remind people that profit is the difference between revenue and expense. This makes you look smart.
Receipts
Part of speech: verb
Definition: To give or write a receipt (for something).
Part of speech: noun
Definition: The act of receiving, or the fact of having been received.
Example sentence: I used to do my own taxes. You know how you buy that gigantic sheet at Staples, add up the restaurants, clothes, and taxis and glue your receipts into the book month by month? The more money I made, the more complicated things got.