Solutions A period of five years has 10 entries with similar clues
- eonYears and years
- agesYears and years
- yonksYears and years
- cyclesRecurring periods of years
- centuryPeriod of 100 years
- pentagonA plane figure with five straight sides and five angles
- trienniumPeriod of three years
- millenniumPeriod of thousand years
- quinquennialRecurring every five years
- quinquenniumFive-year period