やりかた (translations)→ approach art habit manner method number performance response style system tactic way
憶測 (translations)→ assumption conjecture guess speculation surmise
仮説 (translations)→ hypotheses hypothetical
観察 (translations)→ concern contemplation decide estimate examination inspection look observance observation reconnaissance see survey
考え (translations)→ angle calculation dream feel feeling help idea interest math meaning mind motive notion opinion picture reflection solution suggestion think thought valuation view worldview
推測 (translations)→ expect notch projection
推理 (translations)→ arithmetic assertion calculate hypothesis inference suspicion
推論 (translations)→ corollary guesswork sequitur supposition
説 (translations)→ argument belief commonplace history proposal report science
理屈 (translations)→ argumentative basis defence logic rationalization reason reasoning sense token
理想 (translations)→ cause ideal purpose value
理論 (translations)→ philosophy
持論 (translations)→ concept pet project