triphammer vs power hammer

triphammer and power hammer both are nouns.

Word	Noun	Adjective	Verb	Adverb
triphammer	Yes	No	No	No
power hammer	Yes	No	No	No

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

triphammer: a massive power hammer; raised by a cam until released to fall under gravity
power hammer: a power tool for drilling rocks

Other hypernyms of triphammer include hammer.

triphammer (noun)	power hammer (noun)
a massive power hammer; raised by a cam until released to fall under gravity	a power tool for drilling rocks