振动
zhèn dòng · HSK 5
to vibrate
📳 振 = shake/rouse + 动 = move; literally shake-move = vibrate
振 means to shake or rouse (think 振奋 'rouse spirits'); 动 means to move. Together they form the verb to vibrate or the noun vibration. A phone on 振动 mode is literally on shake-move.
动 — force 力 + heavy/重 (simplified from 動)
The traditional form 動 combines 重 (heavy) as the phonetic with 力 (force/strength) as the semantic, suggesting the effort needed to move something heavy. The simplified form 动 replaces 重 with 云, keeping 力 to convey action and motion.