substantialness vs solidness

substantialness and solidness both are nouns.

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

As nouns, substantialness and solidness are synonyms defined as:

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

Other synonyms of substantialness include substantiality.

substantialness (noun)	solidness (noun)
the quality of being substantial or having substance	the quality of being substantial or having substance
	the quality of being solid and reliable financially or factually or morally
	the consistency of a solid
	the state in which a substance has no tendency to flow under moderate stress; resists forces (such as compression) that tend to deform it; and retains a definite size and shape