Adventure.
[ad-VEN-cher]

noun
1. an exciting or very unusual experience. 
2. participation in exciting undertakings or enterprises: 
the spirit of adventure.
3. a bold, usually risky undertaking; hazardous action of uncertain outcome. 
4. a commercial or financial speculation of any kind; venture. 
5. Obsolete.

1. peril; danger; risk.
2. chance; fortune; luck.