Broadly speaking, the shipper is the contractual counterpart of the carrier; the documentary shipper is, for all practical purposes, the FOB seller and the consignor is the person that actually delivers the goods to the carrier at the place of departure.
广义地说，托运人是承运人的合同对应方；单证托运人实际上是离岸价卖方，发货人是实际上在出发地将货物交付承运人的人。