| effort(noun, performance, action, go, work) |
| investigation(noun, study, check, measure, review) |
| nuisance(noun, trouble, bother, ruin, blow) |
| torment(noun, trouble, ruin, concern, difficulty) |
| try(noun, verb, study, trouble, go) |
| annoyance(noun, trouble, bother, concern, blow) |
| care(noun, trouble, worry, concern, strain) |
| contest(noun, action, work, event, fight) |
| trial run(noun, expression, idiom, study, check) |
| analysis(noun, study, check, measure, review) |
| bother(noun, trouble, difficulty, disturbance, irritation) |
| case(noun, activity, law, action, trouble) |
| criterion(noun, check, rule, process, approval) |
| empirical(adjective, experimental) |
| hassle(noun, trouble, work, bother, worry) |
| infliction(noun, ruin, abuse, pain, discipline) |
| pest(noun, trouble, person, bother, ruin) |
| plague(noun, trouble, bother, ruin, concern) |
| venture(noun, verb, study, go, work) |
| check(noun, verb, study, show, determine) |