Nouns

(n)margin, border, perimeterthe boundary line or the area immediately inside the boundary
(n)marginan amount beyond the minimum necessary“the margin of victory”
(n)margin, security depositthe amount of collateral a customer deposits with a broker when borrowing from the broker to buy securities
(n)gross profit, gross profit margin, margin(finance) the net sales minus the cost of goods and services sold
(n)marginthe blank space that surrounds the text on a page“he jotted a note in the margin”
(n)allowance, leeway, margin, tolerancea permissible difference; allowing some freedom to move within limits