Acommodity in which someone invests might include a mutual fund. natural resource. thriving company. certificate of deposit.

A commodity in which someone invests might include natural resource. Some things that can be invested in are gold, beef, oil, and grains. 

In financial aspects, a depression is a sustained, long haul downturn in monetary movement in one or more economies. it is a more extreme monetary downturn than a recession, which is a slowdown in financial action through the span of a typical business cycle. a depression is an irregular and extreme type of recession. so depression is always followed by recession but it is not correct to state that a depression always follow a recession.