positive muon vs antilepton

positive muon and antilepton both are nouns.

Word	Noun	Adjective	Verb	Adverb
positive muon	Yes	No	No	No
antilepton	Yes	No	No	No

As nouns, antilepton is a hypernym of positive muon; that is, antilepton is a word with a broader meaning than positive muon:

positive muon: the antiparticle of a muon; decays to positron and neutrino and antineutrino
antilepton: the antiparticle of a lepton

positive muon (noun)	antilepton (noun)
the antiparticle of a muon; decays to positron and neutrino and antineutrino	the antiparticle of a lepton