| Subject | English | Korean |
| comp., MS | fail fast exception | 빠른 오류 예외 (An exception that cannot be caught by any exception handler and that immediately causes the application to terminate and launch error reporting) |
| IT | fail-over | 무정지Fail-over |
| IT | fail-safe | 유사시 대기 |
| comp., MS | fail-safe operator | 유사 시 대기 운영자 (A user who receives the alert if the designated operator cannot be reached) |
| IT | simple fail-over | 단순 장애 조치 |