atomic weight vs eq

atomic weight and eq both are nouns.

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

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

atomic weight: (chemistry) the mass of an atom of a chemical element expressed in atomic mass units
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

Other hyponyms of atomic weight include combining weight, equivalent, equivalent weight, meq, milliequivalent.

atomic weight (noun)	eq (noun)
(chemistry) the mass of an atom of a chemical element expressed in atomic mass units	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