staplegun vs tacker

staplegun and tacker both are nouns.

Word	Noun	Adjective	Verb	Adverb
staplegun	Yes	No	No	No
tacker	Yes	No	No	No

As nouns, staplegun and tacker are synonyms defined as:

Other synonyms of staplegun include staple gun.

staplegun (noun)	tacker (noun)
a hand-held machine for driving staples home	a hand-held machine for driving staples home
	a sewer who fastens a garment with long loose stitches
	a worker who fastens things by tacking them (as with tacks or by spotwelding)