k-meson vs kaon

k-meson and kaon both are nouns.

Word	Noun	Adjective	Verb	Adverb
k-meson	Yes	No	No	No
kaon	Yes	No	No	No

As nouns, k-meson and kaon are synonyms defined as:

k-meson and kaon: an unstable meson produced as the result of a high-energy particle collision

Other synonyms of k-meson include K particle, kappa-meson.

k-meson (noun)	kaon (noun)
an unstable meson produced as the result of a high-energy particle collision	an unstable meson produced as the result of a high-energy particle collision