dock-walloper vs longshoreman

dock-walloper and longshoreman both are nouns.

Word	Noun	Adjective	Verb	Adverb
dock-walloper	Yes	No	No	No
longshoreman	Yes	No	No	No

As nouns, dock-walloper and longshoreman are synonyms defined as:

dock-walloper and longshoreman: a laborer who loads and unloads vessels in a port

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

dock-walloper (noun)	longshoreman (noun)
a laborer who loads and unloads vessels in a port	a laborer who loads and unloads vessels in a port