mensuration vs measurement

mensuration and measurement both are nouns.

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

As nouns, mensuration and measurement are synonyms defined as:

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

Other synonyms of mensuration include measure, measuring.

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