契約的英語翻譯：

bargaining; bond; contract; covenant; deed; indent; indenture; obligation
pact; stipulation
【經(jīng)】 agreement; agreements; bargain; compact; contract; deed; indenture
instrument; title deed

慣例的英語翻譯：

convention; routine; consuetude; practice; rite; rule; tradition; usage
【化】 convention
【醫(yī)】 nomo-; rut
【經(jīng)】 consuetude; customary rule; customs and usages; established practices
practice; routine; usage