antimeson vs hadron

antimeson and hadron both are nouns.

Word	Noun	Adjective	Verb	Adverb
antimeson	Yes	No	No	No
hadron	Yes	No	No	No

As nouns, hadron is a hypernym of antimeson; that is, hadron is a word with a broader meaning than antimeson:

antimeson: the antiparticle of a meson
hadron: any elementary particle that interacts strongly with other particles

antimeson (noun)	hadron (noun)
the antiparticle of a meson	any elementary particle that interacts strongly with other particles