| lifetime(noun, time, course, life, span) |
| aeon |
| career(noun, time, course, life, period) |
| course(noun, time, life, period, duration) |
| cycle(noun, course, duration, lifetime) |
| days(noun, time, course, life, period) |
| duration(noun, course, lifetime) |
| epoch(noun, course, duration, lifetime) |
| era(noun, course, duration, lifetime, aeon) |
| expectancy(noun, course, duration, lifetime) |
| extent(noun, course, duration, lifetime) |
| generation(noun, course, duration, era, lifetime) |
| history(noun, course, duration, lifetime) |
| length(noun, course, duration, lifetime) |
| life(noun, time, course, period, duration) |
| life cycle(noun, expression, time, course, life) |
| life expectancy(noun, expression, time, course, life) |
| life span(noun, expression, time, course, life) |
| orbit(noun, course, duration, lifetime) |
| period(noun, time, course, life, duration) |