combining weight vs equivalent weight

combining weight and equivalent weight both are nouns.

Word	Noun	Adjective	Verb	Adverb
combining weight	Yes	No	No	No
equivalent weight	Yes	No	No	No

As nouns, combining weight and equivalent weight are synonyms defined as:

combining weight and equivalent weight: 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 synonyms of combining weight include eq, equivalent.

combining weight (noun)	equivalent weight (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	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