solidness vs unreal

solidness is a noun but unreal is not a noun.

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

solidness (noun)	unreal (noun)
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

solidness (adjective)	unreal (adjective)
	lacking in reality or substance or genuineness; not corresponding to acknowledged facts or criteria
	not actually such; being or seeming fanciful or imaginary
	lacking material form or substance; unreal
	contrived by art rather than nature