| reflection(noun, study, act, understanding, philosophy) |
| consideration(noun, study, understanding, dispute, attention) |
| thought(noun, study, act, philosophy, reason) |
| deliberation(noun, study, act, understanding, philosophy) |
| rumination(noun, study, act, understanding, philosophy) |
| contemplation(noun, study, act, understanding, philosophy) |
| study(noun, understanding, philosophy, idea, attention) |
| meditation(noun, study, act, understanding, philosophy) |
| cerebration(noun, act, understanding, philosophy, idea) |
| speculation(noun, act, understanding, process, attention) |
| thinking(noun, understanding, philosophy, reason, idea) |
| pondering(noun, study, understanding, class, exercise) |
| brainwork(noun, act, understanding, process, attention) |
| deduction(noun, understanding, reason, attention, conclusion) |
| reasoning(noun, study, understanding, philosophy, idea) |
| debate(noun, study, dispute, class, exercise) |
| idea(philosophy, thoughts) |
| musing(noun, study, understanding, philosophy, idea) |
| attention(noun, study, understanding, class, exercise) |
| brooding(noun, thought, consideration, thinking, vagueness) |