同時
どうじ · douji · JLPT N3 · noun
simultaneous
⏱️👯 同時 = same + time, so it happens at the same time
同 (dō) means same and 時 (ji) means time or hour. Read the two kanji in order and you get same-time, which is simultaneous. The same 同 appears in 同じ (onaji, same), and 時 appears in 時間 (jikan, time).
同 — 冂 enclosure + 一 + 口 mouth
Originally depicted multiple mouths gathered under one cover or enclosure, suggesting people speaking together in agreement. From this image of voices joining, it came to mean 'same,' 'together,' or 'alike.' The shared cover symbolizes unity.