atomic mass vs meq

atomic mass and meq both are nouns.

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

As nouns, meq is a hyponym of atomic mass; that is, meq is a word with a more specific, narrower meaning than atomic mass:

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

Other hyponyms of atomic mass include combining weight, eq, equivalent, equivalent weight, milliequivalent.

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