stamper vs workingman

stamper and workingman both are nouns.

Word	Noun	Adjective	Verb	Adverb
stamper	Yes	No	No	No
workingman	Yes	No	No	No

As nouns, workingman is a hypernym of stamper; that is, workingman is a word with a broader meaning than stamper:

stamper: a workman whose job is to form or cut out by applying a mold or die (either by hand or by operating a stamping machine)
workingman: an employee who performs manual or industrial labor

Other hypernyms of stamper include working man, working person, workman.

stamper (noun)	workingman (noun)
a power tool that stamps	an employee who performs manual or industrial labor
someone who walks with a heavy noisy gait or who stamps on the ground
a workman whose job is to form or cut out by applying a mold or die (either by hand or by operating a stamping machine)