age, bimester, bimillenary, bimillennium, bloom, blossom, bronze age, calendar day, calendar month, calendar week, canicular days, canicule, century, civil day, clotting time, continuance, dark, dawn, day, daylight, daytime, decade, decennary, decennium, dog days, downtime, drought, duration, duty tour, early days, efflorescence, elapsed time, enlistment, eolithic age, epoch, era, eve, evening, extra time, festival, field day, flower, flush, forenoon, fortnight, generation, golden age, great year, half-century, half life, hebdomad, heyday, historical period, historic period, hitch, honeymoon, hour, hours, incubation period, indian summer, indiction, iron age, lease, life, lifespan, lifetime, long haul, long run, long time, lunar time period, lustrum, mesolithic age, mid-april, mid-august, mid-december, mid-february, mid-january, mid-july, mid-june, mid-march, mid-may, mid-november, mid-october, mid-september, midwinter, millennium, month, morn, morning, morning time, multistage, nap, neolithic age, night, nighttime, noviciate, novitiate, olympiad, overtime, paleolithic age, past, peacetime, peak, period, phase, phase of the moon, platonic year, point, point in time, prehistory, prime, prohibition, prohibition era, quarter, quarter-century, rainy day, regulation time, reign, running time, saint martin's summer, school, schooltime, season, semester, shelf life, silly season, silver age, sleep, stage, stone age, term, term of a contract, term of enlistment, tide, time, time limit, time off, time of life, time of year, tour, tour of duty, travel time, trimester, twelvemonth, two weeks, wartime, watch, week, weekend, work time, year, years, youth, yr

amount, measure, quantity, quantum

period, period of time, time period