thermometry vs mensuration

thermometry and mensuration both are nouns.

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

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

thermometry: the measurement of temperature
mensuration: the act or process of assigning numbers to phenomena according to a rule

Other hypernyms of thermometry include measure, measurement, measuring.

thermometry (noun)	mensuration (noun)
the measurement of temperature	the act or process of assigning numbers to phenomena according to a rule