tariff – n. a tax on goods coming into or leaving a country

commercial – adj. of or related to business and commerce

duty – n. a tax on goods that are being brought into a country

equation – n. a complicated situation or issue

seasoning - n. a substance (such as salt, pepper, a spice, or an herb) that is used to add flavor to food

wholesale – adj. the sale of agricultural or other products in amounts usually for resale