docker vs dockhand

docker and dockhand both are nouns.

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

As nouns, docker and dockhand are synonyms defined as:

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

docker (noun)	dockhand (noun)
a laborer who loads and unloads vessels in a port	a laborer who loads and unloads vessels in a port