reasonableness vs soundness

reasonableness and soundness both are nouns.

Word	Noun	Adjective	Verb	Adverb
reasonableness	Yes	No	No	No
soundness	Yes	No	No	No

As nouns, soundness is a hypernym of reasonableness; that is, soundness is a word with a broader meaning than reasonableness:

Other hypernyms of reasonableness include wisdom, wiseness.

reasonableness (noun)	soundness (noun)
goodness of reason and judgment	the muscle tone of healthy tissue
moderation in expectations	the quality of being prudent and sensible
the property of being moderate in price or expenditures	a state or condition free from damage or decay
the quality of being plausible or acceptable to a reasonable person
the state of having good sense and sound judgment