異同(いどう)

いどう
noun
differences and similarities; discrepancies; variations
formalcognition
1. differences and similarities; discrepancies; variations
Points where two or more things differ from each other, used especially when comparing texts, versions, or regional variants in scholarly contexts.
二(ふた)つの文書(ぶんしょ)の異同(いどう)を調(しら)べる。
To examine the differences between two documents.
原文(げんぶん)と翻訳(ほんやく)の異同(いどう)を比較(ひかく)した。
I compared the differences between the original text and the translation.
各地(かくち)の方言(ほうげん)の異同(いどう)を研究(けんきゅう)するのは興味深(きょうみぶか)い分野(ぶんや)だ。
Studying the variations among regional dialects is a fascinating field.

Literally composed of 異(い) (different) and 同(どう) (same). Despite including both characters, the word focuses primarily on differences and discrepancies. Used in academic, scholarly, and comparative contexts — particularly in textual criticism, linguistics, and legal comparison.

Common collocations

Note on homophones

  • 異動(いどう): personnel transfer — different meaning entirely; refers to reassignment within an organization
  • 移動(いどう): movement, relocation — physical or spatial movement
general
Added 2026.4.7 3:13 · Revised 2026.9.2 13:02
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