7 or 14 day pass?

Does a 7-day pass imply that I have seven "consecutive" days to use it? For example, if there's one day during that week (7 days essentially) that I won't use a train will I lose a day on that 7-day pass? Or, does a 7-day pass mean I could use it for seven "non-consecutive" days if I'm staying there for two weeks? Please confirm.