"Foreign exchange is the abbreviation of foreign exchange, but the actual asset class we refer to is currency. Forex is for a variety of reasons, usually for travel or business, to convert a country's currency into another country's currency. Since companies are global, it is necessary to trade with other countries in their own country-specific currencies.
Leverage is an important financial tool that allows an investor to grow his market exposure to a level that exceeds the initial investment. To avoid risks in my trading career, I always use the 1: 100 leverage, despite having up to 1: 2000 that always insure my AAFX trading broker. But, in my demo trading I took a high leverage to see how it works.