Negotiable instruments means the valuable securities signed and issued by the drawer, who agrees itself to or authorizes the drawee to pay unconditionally a sum certain in money.

• 票据是指由出票人签发的，无条件约定自己或委托他人支付一定金额，可流通转让的有价证券，它具有无因性、文义性、要式性等显著的特点。