gauge boson vs gluon

gauge boson and gluon both are nouns.

Word	Noun	Adjective	Verb	Adverb
gauge boson	Yes	No	No	No
gluon	Yes	No	No	No

As nouns, gluon is a hyponym of gauge boson; that is, gluon is a word with a more specific, narrower meaning than gauge boson:

gauge boson: a particle that mediates the interaction of two elementary particles
gluon: a gauge boson that mediates strong interaction among quarks

Other hyponyms of gauge boson include graviton, intermediate vector boson, photon.

gauge boson (noun)	gluon (noun)
a particle that mediates the interaction of two elementary particles	a gauge boson that mediates strong interaction among quarks