| archaic period(expression, period, history, stage) |
| bronze age(expression, period, history, stage) |
| byzantine period(expression, period, history, stage) |
| chalcolithic(noun, period, history, stage) |
| classic stage(expression, period, history, stage) |
| early medieval period(expression, period, history, stage) |
| epipaleolithic(noun, period, history, stage) |
| formative stage(expression, period, history, stage) |
| germanic iron age(expression, period, history, stage) |
| hellenistic period(expression, period, history, stage) |
| iron age(expression, period, history, stage) |
| lithic stage(expression, period, history, stage) |
| medieval period(expression, period, history, stage) |
| middle ages(expression, period, history, stage) |
| modern era(expression, period, history, stage) |
| modern period(expression, period, history, stage) |
| nordic bronze age(expression, period, history, stage) |
| nordic stone age(expression, period, history, stage) |
| paleolithic(noun, period, history, stage) |
| post-classic stage(expression, period, history, stage) |