heaver vs workman

heaver and workman both are nouns.

Word	Noun	Adjective	Verb	Adverb
heaver	Yes	No	No	No
workman	Yes	No	No	No

As nouns, workman is a hypernym of heaver; that is, workman is a word with a broader meaning than heaver:

heaver: a workman who heaves freight or bulk goods (especially at a dockyard)
workman: an employee who performs manual or industrial labor

Other hypernyms of heaver include working man, working person, workingman.

heaver (noun)	workman (noun)
a bar used as a lever (as in twisting rope)	an employee who performs manual or industrial labor
a workman who heaves freight or bulk goods (especially at a dockyard)