stamper vs power tool

stamper and power tool both are nouns.

Word	Noun	Adjective	Verb	Adverb
stamper	Yes	No	No	No
power tool	Yes	No	No	No

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

stamper (noun)	power tool (noun)
a power tool that stamps	a tool driven by a motor
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)