geometric mean vs mean value

geometric mean and mean value both are nouns.

Word	Noun	Adjective	Verb	Adverb
geometric mean	Yes	No	No	No
mean value	Yes	No	No	No

As nouns, mean value is a hypernym of geometric mean; that is, mean value is a word with a broader meaning than geometric mean:

geometric mean: the mean of n numbers expressed as the n-th root of their product
mean value: an average of n numbers computed by adding some function of the numbers and dividing by some function of n

Other hypernyms of geometric mean include mean.

geometric mean (noun)	mean value (noun)
the mean of n numbers expressed as the n-th root of their product	an average of n numbers computed by adding some function of the numbers and dividing by some function of n