なるほど (translations)→ actually admittedly ah aha certainly do fine gotcha indeed magnificent probably quite really so sure surprised then true truly uh-huh undoubtedly well yes
気 (translations)→ air attention chi composure concentration desire feel feeling heart hunch idea impulse intention interest life mind mood motive nerve nerves oneself purpose qi sense short something temper thought vitality wish
考える (translations)→ absorb approach ask assume believe care chew compose conceive concentrate consider contemplate count debate decide delve design determine disguise dwell examine expectation fancy feature figure find gather glance ideate imagine judge know look meditate occur plan ponder process prospect question realize reason recall recognize regard register remembrance result ruminate scheme see seek speculate suggest suppose suspect theorize think through trouble waver weigh wonder