K particle vs kaon

K particle and kaon both are nouns.

Word	Noun	Adjective	Verb	Adverb
K particle	Yes	No	No	No
kaon	Yes	No	No	No

As nouns, K particle and kaon are synonyms defined as:

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

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

K particle (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