baryon vs nucleon

baryon and nucleon both are nouns.

Word	Noun	Adjective	Verb	Adverb
baryon	Yes	No	No	No
nucleon	Yes	No	No	No

As nouns, nucleon is a hyponym of baryon; that is, nucleon is a word with a more specific, narrower meaning than baryon:

baryon: any of the elementary particles having a mass equal to or greater than that of a proton and that participate in strong interactions; a hadron with a baryon number of +1
nucleon: a constituent (proton or neutron) of an atomic nucleus

Other hyponyms of baryon include hyperon.

baryon (noun)	nucleon (noun)
any of the elementary particles having a mass equal to or greater than that of a proton and that participate in strong interactions; a hadron with a baryon number of +1	a constituent (proton or neutron) of an atomic nucleus