loader vs docker

loader and docker both are nouns.

Word	Noun	Adjective	Verb	Adverb
loader	Yes	No	No	No
docker	Yes	No	No	No

As nouns, loader and docker are synonyms defined as:

Other synonyms of loader include dock-walloper, dock worker, dockhand, dockworker, longshoreman, lumper, stevedore.

loader (noun)	docker (noun)
a laborer who loads and unloads vessels in a port	a laborer who loads and unloads vessels in a port
an attendant who loads guns for someone shooting game