fullness vs voluminosity

fullness and voluminosity both are nouns.

Word	Noun	Adjective	Verb	Adverb
fullness	Yes	No	No	No
voluminosity	Yes	No	No	No

As nouns, fullness and voluminosity are synonyms defined as:

Other synonyms of fullness include voluminousness.

fullness (noun)	voluminosity (noun)
greatness of volume	greatness of volume
the property of a sensation that is rich and pleasing
the condition of being filled to capacity
completeness over a broad scope