| need(noun, verb, order, help, force) |
| requirement(noun, order, fix, understanding, pass) |
| essential(noun, adjective, condition, want, need) |
| demand(noun, force, desire, burden, call) |
| requisite(noun, condition, want, need, essential) |
| want(noun, verb, order, fix, pass) |
| must(noun, force, understanding, right, condition) |
| prerequisite(noun, condition, want, need, essential) |
| necessary(noun, want, need, essential, basic) |
| compulsion(noun, force, understanding, drive, right) |
| exigency(noun, trouble, change, force, pass) |
| urgency(noun, trouble, change, force, fix) |
| pinch(noun, trouble, change, fix, pass) |
| inevitability(noun, need, essential, fate, requirement) |
| obligation(noun, force, cause, right, reason) |
| sine qua non(noun, expression, idiom, condition, need) |
| indigence(noun, pass, difficulty, distress, failure) |
| condition(noun, concern, need, essential, essence) |
| constraint(noun, force, fix, understanding, pass) |
| neediness(noun, pass, difficulty, distress, failure) |