What are gross profit and net profit in economics?

Gross profit refers to the main business income minus the main business cost. Look at the profitability level of the main business projects. Gross profit = revenue - cost

Pure profit is also called net profit, which refers to : Gross profit minus national tax\local tax\management fee\travel expense\staff salary\meal expense\rent fee\water and electricity fee and other intermediate expenses (indirect intermediate expenses adopt the equal sharing method)