stevedore vs dockworker

stevedore and dockworker both are nouns.

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

As nouns, stevedore and dockworker are synonyms defined as:

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

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

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