Emily receives 800$ every two weeks. However, she only takes home $600 after tax deductions from her paycheck. The $800 is Emily's, while $600 is her income.

Revenue is the total amount of money on receives; it is used especially for companies. Revenue can come fom all kind of sources such as salaries, wages rent, product sales etc. In this case, the 800$ are Emily's revenue. However, income is the net amount of money that one gets at the end, the net result. Hence, 600$ are Emily's income after applying the tax deductions.