| formation(noun, period, age, era, lifetime) |
| history(noun, life, chronicle, chronology) |
| timekeeper(noun, time, record, chronicle, timepiece) |
| timepiece(noun, time, record, chronicle) |
| watch(noun, time, record, chronicle, timepiece) |
| aliveness(noun, life, living, existence, lifetime) |
| antecedent(noun, past, antiquity, yore) |
| era(noun, period, age, lifetime) |
| expertise(noun, science, knowledge, proficiency, scholarship) |
| futurity(noun, fate, future, outlook, eternity) |
| hereafter(noun, fate, future, outlook, eternity) |
| knowledge(noun, science, proficiency, scholarship) |
| possibility(noun, chance, prospect, probability) |
| procreation(noun, period, age, era, lifetime) |
| proficiency(noun, science, knowledge, scholarship) |
| propagation(noun, period, age, era, lifetime) |
| scholarship(noun, science, knowledge, proficiency) |
| special relativity(expression, science, physics, relativity) |
| yore(noun, past, antecedent, antiquity) |
| alarm(noun, time, record, chronicle, timepiece) |