| survival(noun, period, continuance, duration) |
| advanced age(expression, time, age, senescence) |
| agedness(noun, time, age, senescence) |
| decrepitude(noun, time, age, senescence) |
| elderliness(noun, time, age, senescence) |
| fatuity(noun, time, age, senescence) |
| imbecility(noun, time, age, senescence) |
| infirmity(noun, time, age, senescence) |
| longevity(noun, period, continuance, duration) |
| period(noun, time, distance, continuance, duration) |
| second childhood(expression, time, age, senescence) |
| senectitude(noun, time, age, senescence) |
| senility(noun, time, age, senescence) |
| term(noun, time, period, distance, continuance) |
| weakness(noun, time, age, senescence) |
| breadth(noun, time, distance, year) |
| compass(noun, time, distance, year) |
| constancy(noun, period, continuance, duration) |
| continuance(noun, time, distance, year) |
| continuation(noun, period, continuance, duration) |