stamper vs stamping machine

stamper and stamping machine both are nouns.

Word	Noun	Adjective	Verb	Adverb
stamper	Yes	No	No	No
stamping machine	Yes	No	No	No

As nouns, stamper and stamping machine are synonyms defined as:

stamper (noun)	stamping machine (noun)
a power tool that stamps	a power tool that stamps
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)