Hi Kamil; Good question! Revenue is the total amount of money received for goods and/or services. Example: The company sold 50,000 automobiles and generated 10,000,000 in revenue. Income or net profit are the same. Revenue minus expenses equals income/net profit. Benefit is any enhancement, advantage of gain. Profits are benefits but so is having a good reputation. I hope this helps, Stephen

I'd only add that "income" also refers to the money that you regularly get, i.e., your wages. Also, "benefit" may refer to the specific perks of working for a certain company: "They provide all their employees with a mobile phone".