What is the difference between postal and courier services?
The US postal service is basically a national service. They serve everyone, deliver everything – and do so at an affordable rate. Courier services on the other hand – are private firms that ship parcels and important documents- many of whom specialize in specific kinds of shipping.
What is the difference between parcel and freight?
In general, parcels are boxes shipped and labeled individually. Freight, on the other hand, would be a collection of boxes shipped on one pallet, moving as a group. Typically, anything shipping with a collective weight over 150 lbs will utilize freight.