payload vs loading

payload and loading both are nouns.

Word	Noun	Adjective	Verb	Adverb
payload	Yes	No	No	No
loading	Yes	No	No	No

As nouns, payload and loading are synonyms defined as:

Other synonyms of payload include cargo, consignment, freight, lading, load, shipment.

payload (noun)	loading (noun)
goods carried by a large vehicle	the labor of putting a load of something on or in a vehicle or ship or container etc.
the front part of a guided missile or rocket or torpedo that carries the nuclear or explosive charge or the chemical or biological agents	goods carried by a large vehicle
	weight to be borne or conveyed
	a quantity that can be processed or transported at one time
	the ratio of the gross weight of an airplane to some factor determining its lift