Here are two of the four letter words utilizing those 4 letters in a combination that immediately come to mind.
1. grin
2. ring
The rule of thumb is that as soon as an incident occurs, an incident report should be completed. Minor injuries should be reported and taken as equally important as major injuries are. These injuries may get worse and lead to more serious injuries or health issues.
I
Am
A
Man
Martin
Luther
King
Jr
Once
Said