polearm vs furket

polearm and furket both are nouns.

Word	Noun	Adjective	Verb	Adverb
polearm	Yes	No	No	No
furket	Yes	No	No	No

As nouns, furket is a hyponym of polearm; that is, furket is a word with a more specific, narrower meaning than polearm:

polearm: a close combat weapon in which the main fighting part of the weapon is fitted to the end of a long shaft, typically of wood, thereby extending the user's effective range.
furket: A forked pole, about four feet in length, used as a support for muskets.

Other hyponyms of polearm include Lochaber ax, poleax, poleaxe, musket rest.

polearm (noun)	furket (noun)
a close combat weapon in which the main fighting part of the weapon is fitted to the end of a long shaft, typically of wood, thereby extending the user's effective range.	A forked pole, about four feet in length, used as a support for muskets.