| experiment(noun, verb, struggle, examination, test) |
| trial(noun, study, measure, examination, test) |
| research(noun, study, examination, test, trial) |
| empiricism(noun, philosophy, induction) |
| test(noun, study, measure, struggle, examination) |
| testing(noun, struggle, examination, test, analysis) |
| examination(noun, study, measure, struggle, test) |
| induction(noun, philosophy, pragmatism) |
| investigation(noun, study, measure, struggle, examination) |
| trial and error(noun, expression, idiom, study, measure) |
| analysis(noun, study, measure, struggle, find) |
| inquiry(noun, study, investigation) |
| research and development(noun, expression, idiom, study, measure) |
| assay(noun, study, measure, struggle, examination) |
| attempt(noun, study, measure, struggle, examination) |
| audition(noun, struggle, examination, test, trial) |
| control experiment(expression, idiom) |
| discovery(noun, finding, uncovering) |
| enquiry |
| essay(noun, study, measure, struggle, examination) |