dockhand vs dockworker

dockhand and dockworker both are nouns.

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

As nouns, dockhand and dockworker are synonyms defined as:

dockhand and dockworker: a laborer who loads and unloads vessels in a port

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

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