Thanks a lot for an exhaustive answer!!!

deogratias, A single item that can be sent by post (mail): In the US = a piece of mail mail = material sent or carried in the mail On the United States Post Office website it is also called = a mailpiece

This is not quite correct. "Consignment" and "shipment" can be used either way, and everyone will know what you mean. There are two reasons for this. 1. Most listeners will instantly be able to determine to which definition you are referring. 2. Usually when it is unclear, either definition will provide the same meaning to the sentence. There are very few examples that do not fit these two rules. For example: "The consignment will arrive at 5 p.m." This refers to the objects, because the act of shipping cannot "arrive". "The consignment will take place at 5 p.m." This refers to the action, because the objects cannot "take place" at all. "The consignment will cost $10." It doesn't really matter. Either way, for you to receive the objects, it will cost you $10. So, if you refer to the "shipment" or "consignment" as the object, you will almost certainly be clear to the listener. All of the following would be correct - "Consignment" "Shipment" "Cargo" "Parcel" "Package" "Load" "Goods" "Freight" "Delivery".

arrange shipment? sometimes,it seems u want to send out several cartons of products wanna send it by express? such as DHL .UPS.... u just type it like this: will send it by DHL express

POST. It is usually used in British English.