polo mallet vs polo stick

polo mallet and polo stick both are nouns.

Word	Noun	Adjective	Verb	Adverb
polo mallet	Yes	No	No	No
polo stick	Yes	No	No	No

As nouns, polo mallet and polo stick are synonyms defined as:

polo mallet (noun)	polo stick (noun)
a mallet used to strike the ball in polo	a mallet used to strike the ball in polo