different between shipment vs unload

English

From ship +? -ment.

shipment (countable and uncountable, plural shipments)

a load of goods that is transported by any method (not just by ship)
- We're expecting another shipment of oranges tomorrow.
the act of transporting goods
- Shipment of hazardous waste on this route is strictly prohibited.

From un- +? load.

unload (third-person singular simple present unloads, present participle unloading, simple past and past participle unloaded)

(transitive) To remove the load or cargo from (a vehicle, etc.).
to unload a ship; to unload a camel
(transitive) To remove (the load or cargo) from a vehicle, etc.
to unload bales of hay from a truck
(intransitive) To deposit one's load or cargo.
(transitive, intransitive, figuratively) To give vent to or express; to unburden oneself of.
- 1984, John Arlott, David Rayvern Allen, Arlott on cricket: his writings on the game
  […] who bowled with such fury that he needed beer to give him something to sweat out, and who unloaded his emotions in words as hard as his bowling.
(transitive, computing) To remove (something previously loaded) from memory.
- 1993, Tony Martin, Lisa C Towell, The NewWave agent handbook
  When you unload a DLL, the memory and other system resources it is using will become available for use by other applications.
(transitive) To discharge, pour, or expel.
(transitive) To get rid of or dispose of.
to unload unprofitable stocks
(transitive, aviation) To reduce the vertical load factor on an airplane's wing or other lifting surface, typically by pitching downwards toward the ground to decrease angle of attack and reduce the amount of lift generated.
(transitive) To deliver forcefully.
(transitive, slang) To ejaculate, particularly within an orifice. (Can we add an example for this sense?)
(transitive) To draw the charge from.
to unload a gun

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