hackbut vs harquebus

hackbut and harquebus both are nouns.

Word	Noun	Adjective	Verb	Adverb
hackbut	Yes	No	No	No
harquebus	Yes	No	No	No

As nouns, hackbut and harquebus are synonyms defined as:

Other synonyms of hackbut include arquebus, hagbut.

hackbut (noun)	harquebus (noun)
an obsolete firearm with a long barrel	an obsolete firearm with a long barrel