truncheon vs billystick

truncheon and billystick both are nouns.

Word	Noun	Adjective	Verb	Adverb
truncheon	Yes	No	No	No
billystick	Yes	No	No	No

As nouns, truncheon and billystick are synonyms defined as:

truncheon and billystick: a short stout club used primarily by policemen

Other synonyms of truncheon include baton, billy, billy club, nightstick.

truncheon (noun)	billystick (noun)
a short stout club used primarily by policemen	a short stout club used primarily by policemen