Income minus all expenses.
Example: Sam's Bakery received $900 yesterday, but expenses such as wages, food and electricity came to $650. So the Profit was $900 − $650 = $250.
But if the income is LESS THAN the expenses it is called a "Loss".
Example: On Monday last week Sam's Bakery received $480, but expenses were $520. And $480 − $520 = −$40, which is a $40 Loss