| Answer | Crossword Clue |
|---|---|
| currency | The time during which something is in use or operation |
| currencies | The time during which something is in use or operation |
| on | ed as a function word to indicate a time frame during which something takes place a parade on Sunday or an instant, action, or occurrence when something begins or is done on cue on arriving home, I found your letter news on the hour cash on delivery |
| downtime | Time during which a machine, esp. a computer, is out of action or unavailable for use |
| frequency | The rate at which something occurs or is repeated over a particular period of time or in a given sample |
| frequencies | The rate at which something occurs or is repeated over a particular period of time or in a given sample |
