# Glossary - *session*: a timed interval once started, whatever its phase; it can be running, paused, or finished. - *pomodoro*: a completed work interval. It is what the history logs and the cycle counts. - *phase*: the kind of interval, either work, short break, or long break. - *cycle*: the configured number of pomodoros leading to a long break. - *armed*: selected as the next phase and duration, but not running. - *idle*: no session has been started; the next one is armed. - *mode*: the selected behaviour. Timer runs one work countdown; Pomodoro runs the work/break cycle.