Airsoft is a hobby in which we seek fun and enjoy ourselves, but as in any activity can suffer accidents. Although if we observe safety rules we could avoid many reckless frights.

Accident definition is:

accident
m. Eventual occurrence which is unintentionally damage.

Recklessness definition is:

recklessness
der. Negligence can lead to danger or harm to others and can be considered misdemeanor or felony depending on the result to produce.

Here you have a video so you can clearly see the difference between them.