Hazard (noun)

1. A danger or risk.
2. A condition that could cause harm or damage.
3. A measure taken to reduce or prevent danger or risk.

Origin:

Middle english: from old french hazard, based on arabic az-zahr "the dice".

Examples:

1. Driving in heavy traffic is a hazard to your safety.
2. The building had many fire hazards that needed to be addressed.
3. Wearing a seatbelt is a safety hazard.
4. The company took every possible hazard into consideration when designing the product.
5. The workers were trained to identify and mitigate hazards on the job site.