eq vs atomic mass

eq and atomic mass both are nouns.

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

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

eq: the atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8 for oxygen
atomic mass: (chemistry) the mass of an atom of a chemical element expressed in atomic mass units

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

eq (noun)	atomic mass (noun)
the atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8 for oxygen	(chemistry) the mass of an atom of a chemical element expressed in atomic mass units