ice ax vs piolet

ice ax and piolet both are nouns.

Word	Noun	Adjective	Verb	Adverb
ice ax	Yes	No	No	No
piolet	Yes	No	No	No

As nouns, ice ax and piolet are synonyms defined as:

ice ax and piolet: an ax used by mountain climbers for cutting footholds in ice

Other synonyms of ice ax include ice axe.

ice ax (noun)	piolet (noun)
an ax used by mountain climbers for cutting footholds in ice	an ax used by mountain climbers for cutting footholds in ice