Revenue is the gross sales or cash receipts received by a business from its customers in the ordinary course of business that involves selling goods or providing services. Also known as turnover, sales, fees earned. Revenue is the first line detailed on an Income Statement.
Income is the increase in economic benefit available to the business owners from the net result of the revenues less the expenses incurred in earning that revenue for a previous period. Also known as net profit or earnings. Income is the last line detailed on an Income Statement which is why it is also called the "bottom line".