配送 (pèi sòng) means 'to deliver' but specifically refers to the process of assembling an order (配货) and then delivering it, common in logistics and e-commerce. It is more specific than 送 (sòng), which is a general word for 'send/deliver' without the assembly step, and different from 递 (dì), which means 'hand over' or 'pass' something directly to someone.