substantialness vs substantiality

substantialness and substantiality both are nouns.

Word	Noun	Adjective	Verb	Adverb
substantialness	Yes	No	No	No
substantiality	Yes	No	No	No

As nouns, substantialness and substantiality are synonyms defined as:

substantialness and substantiality: the quality of being substantial or having substance

Other synonyms of substantialness include solidness.

substantialness (noun)	substantiality (noun)
the quality of being substantial or having substance	the quality of being substantial or having substance