コツ (translations)→ key knack ritual rope secret something thing touch way
根拠 (translations)→ base case certainty evidence merit ratio rationale reason source
示唆 (translations)→ encouragement indication
手がかり (translations)→ clue data importance information lead luck message trace
助言 (translations)→ advice advise comment counsel notion
証拠 (translations)→ ammo collateral hint marker proof sign testimonial track