piolet vs ice axe

piolet and ice axe both are nouns.

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

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

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

Other synonyms of piolet include ice ax.

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