gravimetry vs mensuration

gravimetry and mensuration both are nouns.

Word	Noun	Adjective	Verb	Adverb
gravimetry	Yes	No	No	No
mensuration	Yes	No	No	No

As nouns, mensuration is a hypernym of gravimetry; that is, mensuration is a word with a broader meaning than gravimetry:

gravimetry: the measurement of specific gravity
mensuration: the act or process of assigning numbers to phenomena according to a rule

Other hypernyms of gravimetry include measure, measurement, measuring.

gravimetry (noun)	mensuration (noun)
the measurement of specific gravity	the act or process of assigning numbers to phenomena according to a rule