Real Dictionary

freight
uncountable noun: Freight is goods that are transported by lorries, trains, ships, or aeroplanes.
uncountable noun: Freight is the movement of goods by lorries, trains, ships, or aeroplanes.

freight in American English
a method or service for transporting goods, esp. bulky goods, by water, land, or air: freight is usually cheaper but slower than express
to load with freight
noun: goods, cargo, or lading transported for pay, whether by water, land, or air
transitive verb: to load; burden