スイッチsuitchi

1. nounswitch
   この仕掛しかけはスイッチで動うごく。↗

   This device is actuated by a switch.
2. noun, railwayswitch; points
3. noun, suru verb, transitive verbswitch (from one thing to another); change

• SynonymチェンジNeutralA colloquial loanword for replacing or changing, as in 「メンバーチェンジ」; common in speech. 「スイッチ」 leans toward switching states.
• Synonym転換てんかんNeutralA change of policy or direction, as in 「発想の転換」「方向転換」; more at home in written or formal prose. 「スイッチ」 is the more colloquial choice.
• Synonym切り替えきりかえNeutralA noun for switching or turning something over, as in 「気持ちの切り替え」; everyday in tone. As a noun it is close to 「スイッチ」.
• Synonym切り替えるきりかえるNeutralThe everyday transitive verb for switching to something else, as in 「電源を切り替える」「頭を切り替える」; in daily speech it is more common than 「スイッチする」.
• RelatedシフトNeutralA loanword for a shift or move — changing gears, shift work, a change of direction, as in 「方針をシフトする」「シフト勤務」. Unlike 「スイッチ」, it never refers to a switch device.
• Related移行いこうNeutralA gradual transition from one state to another, typically for systems or institutions, as in 「新システムへの移行」; 「スイッチ」 suggests an instant flip, not a staged migration.
• Related切り替わるきりかわるNeutralIntransitive: a screen or state changes from one to another, as in 「画面が切り替わる」. 「スイッチ」 can also mean the switch device, which this verb cannot.
• RelatedスワップNeutralA loanword for exchanging or swapping, mostly in finance or IT, as in 「金利スワップ」. 「スイッチ」 is about switching over, not a mutual exchange.
• Related変えるかえるNeutralThe broadest transitive verb for change, as in 「方針を変える」; 「スイッチ」 leans toward an instant switchover rather than change in general.
• Related変換へんかんNeutralConverting something from one form to another, as in 「文字変換」「データ変換」 — mostly IT and math. 「スイッチ」 does not cover this kind of form conversion.

Use 「スイッチ」 for a switch device or an instant switchover. For everyday switching pick 「切り替える」, for a change of policy or direction 「転換」, for converting form 「変換」, and for migrating to a new system 「移行」. 「シフト」 covers shifts of direction, gears and work schedules; 「スワップ」 is a mutual exchange; 「チェンジ」 a replacement; 「変える」 is the all-purpose verb for change.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 電気でんき点滅てんめつ器き。開閉器かいへいき。
2. 転轍てんてつ器き。
3. 投手とうしゅ交替こうたい。
4. 状態じょうたいを切り替きりかえること。