plumbing vs mensuration

plumbing and mensuration both are nouns.

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

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

plumbing: measuring the depths of the oceans
mensuration: the act or process of assigning numbers to phenomena according to a rule

Other hypernyms of plumbing include measure, measurement, measuring.

plumbing (noun)	mensuration (noun)
measuring the depths of the oceans	the act or process of assigning numbers to phenomena according to a rule
the occupation of a plumber (installing and repairing pipes and fixtures for water or gas or sewage in a building)
utility consisting of the pipes and fixtures for the distribution of water or gas in a building and for the disposal of sewage