Hi,
Incident is a more general word. It can be used to talk about any single event, including something that went wrong. It can be something intentional but it never results in anyone’s injury or death.
Accidents are always unintentional and can result in someone’s injury or death.
An accident can also be a happy event that happens unexpectedly (for example, winning a lottery).
If you would like to practice these two words go to
languageavenue.com/intermediate-english/...-1-intermediate.html
Good luck!
Admin