dosimetry vs mensuration

dosimetry and mensuration both are nouns.

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

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

dosimetry: measuring the dose of radiation emitted by a radioactive source
mensuration: the act or process of assigning numbers to phenomena according to a rule

Other hypernyms of dosimetry include measure, measurement, measuring.

dosimetry (noun)	mensuration (noun)
measuring the dose of radiation emitted by a radioactive source	the act or process of assigning numbers to phenomena according to a rule