二致 er4 zhi4

difference (usu. follows 無|无[wu2] as in 毫無二致|毫无二致[hao2 wu2 er4 zhi4] or 別無二致|别无二致[bie2 wu2 er4 zhi4])

HSK 2

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English Phonetic: 'difәrәns

Detailed Definition: n. the quality of being unlike or dissimilar\nn. a significant change