| poll(noun, search, discovery, exploration) |
| poser(noun, challenge, question, task) |
| predicament(noun, challenge, question, task) |
| probation(noun, search, discovery, exploration) |
| probe(noun, search, discovery, exploration) |
| probing(noun, search, discovery, exploration) |
| puzzle(noun, challenge, question, task) |
| puzzlement(noun, challenge, question, task) |
| quagmire(noun, challenge, question, task) |
| quandary(noun, challenge, question, task) |
| query(noun, search, discovery, exploration) |
| quest(noun, search, discovery, exploration) |
| question(noun, challenge, search, task, discovery) |
| questionary(noun, search, discovery, exploration) |
| questionnaire(noun, search, discovery, exploration) |
| quiz(noun, search, discovery, exploration) |
| rehearing(noun, search, discovery, exploration) |
| reinvestigation(noun, search, discovery, exploration) |
| research(noun, search, discovery, exploration) |
| riddle(noun, challenge, question, task) |