sound ranging vs mensuration

sound ranging and mensuration both are nouns.

Word	Noun	Adjective	Verb	Adverb
sound ranging	Yes	No	No	No
mensuration	Yes	No	No	No

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

sound ranging: locating a source of sound (as an enemy gun) by measurements of the time the sound arrives at microphones in known positions
mensuration: the act or process of assigning numbers to phenomena according to a rule

Other hypernyms of sound ranging include measure, measurement, measuring.

sound ranging (noun)	mensuration (noun)
locating a source of sound (as an enemy gun) by measurements of the time the sound arrives at microphones in known positions	the act or process of assigning numbers to phenomena according to a rule