| Answer | Crossword Clue |
|---|---|
| reserving | Use or engage in something only in or at (a particular circumstance or time) |
| reserves | Use or engage in something only in or at (a particular circumstance or time) |
| frequencies | The rate at which something occurs or is repeated over a particular period of time or in a given sample |
| frequency | The rate at which something occurs or is repeated over a particular period of time or in a given sample |
