Period (Definite duration, or portion of time)
Nouns
- period, age, era
- second, minute, hour, day, week, month, quarter, year, decade, decenniumm lustrum, quinquennium, lifetime, generation
- epoch, ghurry, lunation, moon. century, millennium
Adjectives
- horary
- hourly, annual etc. (periodical) Periodicity [Regularity of recurrence].