| case(noun, event, happening, however, though) |
| chance(noun, event, case, happening, however) |
| check(noun, limit, condition) |
| circumscription(noun, limit, condition) |
| constraint(noun, limit, condition) |
| curb(noun, limit, condition) |
| demand(noun, situation, need, necessity) |
| desideration(noun, limit, condition) |
| desideratum(noun, limit, condition) |
| edge(noun, limit, condition) |
| episode(noun, event, case, happening, however) |
| essential(noun, situation, need, necessity) |
| exception(noun, situation, need, necessity) |
| exemption(noun, situation, need, necessity) |
| experience(noun, event, case, happening, however) |
| fetter(noun, limit, condition) |
| happening(noun, event, case, however, though) |
| incident(noun, event, case, happening, however) |
| limitation(noun, limit, condition, situation, need) |
| modification(noun, situation, need, necessity) |