meq vs atomic mass

meq and atomic mass both are nouns.

Word	Noun	Adjective	Verb	Adverb
meq	Yes	No	No	No
atomic mass	Yes	No	No	No

As nouns, atomic mass is a hypernym of meq; that is, atomic mass is a word with a broader meaning than meq:

meq: one-thousandth of an equivalent
atomic mass: (chemistry) the mass of an atom of a chemical element expressed in atomic mass units

Other hypernyms of meq include atomic weight, relative atomic mass.

meq (noun)	atomic mass (noun)
one-thousandth of an equivalent	(chemistry) the mass of an atom of a chemical element expressed in atomic mass units