Trade barriers are government-induced restrictions on international trade.
A trade tariff is a tax imposed on imported goods and services. Tariffs are used to restrict trade, as they increase the price of imported goods and services, making them more expensive to consumers.
A non-tariff barrier is a form of restrictive trade where barriers to trade are set up and take a form other than a tariff. Non-tariff barriers include regulatory compliance, quotas, levies, embargoes, pre-shipment inspections, sanctions, rules of origin (‘made in’), and are frequently used by large and developed economies.