The Financial Market s are the market places where buyers and sellers exchange financial assets such as stocks, commodities, Bonds, currencies etc... Financial Markets primary purpose is to mobilize savings from net lenders and to borrowers with a goal of increasing the net lender's purchasing power. Financial markets offer Liquidity to investors allowing them to sell an asset before its maturity.
The NYSE is an example of a financial market where billions of dollars worth of assets are traded daily.
When you arrive in a new country and go to a booth to exchange your nation's currency, you are selling you nation's currency in a financial market.