Net profit: The operating income less taxes and interest. The same as earnings, or net income.
Profit before int and taxes:
This is also called EBIT, for Earnings Before Interest and Taxes. It is gross margin minus operating expenses.
Net profit margin before taxes:
The remainder after cost of goods sold, other variable costs revenue, or simply, total revenue minus total cost. Net profit margin can be expressed in actual monetary values or percentage terms.
Profit:
Profit is an accounting concept, normally the bottom l;ine of the Income Statement, which is also called Profit or Loss statement. Start with sales, subtract all costs of sales and all expenses, and that produces profit before tax. Subtract tax to get net profit.
Profit or Loss:
Also called Profit and Loss statement. An income statement is a financial statement that shows sales, cost of sales, gross margin, operating expenses, and profits or losses. Gross margin is sales less cost of sales, and profit (or loss) is gross margin less operating expenses and taxes. The result is profit if it's positive, loss if it's negative.