piolet vs ice ax

piolet and ice ax both are nouns.

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

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

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

Other synonyms of piolet include ice axe.

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