(1)双重代理；双方代理
代理人同时代理相互间存在利益冲突的双方当事人进行同一项交易活动的行为。

(2)双重间谍
同时为两个敌对国家或市场竞争者服务的间谍行为。

• Corpus humanum non recipit estimationem.
• Corpus Juris
• Corpus Juris Canonici
• Corpus Juris Civilis
• Corpus Juris Secundum/C.J.S.
• corrected policy
• correction
• correctional institutions
• correctional system
• corrector of the staple
• corregidor
• correi
• correi credendi
• correi debendi
• correlative
• correlative rights (doctrine)
• correspondence audit
• correspondent
• correspondent bank
• corroborate
• corroborating circumstances
• corroborating evidence
• corroboration
• corroborative evidence
• corrody