Risk (noun)

1. The possibility of harm or damage.
2. The possibility that something bad may happen.
3. The possibility of loss or injury.
4. A situation involving uncertainty.
5. An action or situation with a possibility of danger or failure.

Origin:

Late middle english (in the sense "a venture, a chance"): from old french risque, based on arabic risqa, from rassaqa "to expose to danger".

Examples:

1. The company is willing to take the risk of investing in a new market.
2. The risk of getting sick is higher during the winter months.
3. The risk of losing money is always present in the stock market.
4. Driving on a busy road is always a risk.
5. She took a risk and quit her job to start her own company.