expensiveness vs monetary value

expensiveness and monetary value both are nouns.

Word	Noun	Adjective	Verb	Adverb
expensiveness	Yes	No	No	No
monetary value	Yes	No	No	No

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

expensiveness: the quality of being high-priced
monetary value: the property of having material worth (often indicated by the amount of money something would bring if sold)

Other hypernyms of expensiveness include cost, price.

expensiveness (noun)	monetary value (noun)
the quality of being high-priced	the property of having material worth (often indicated by the amount of money something would bring if sold)