wildcat vs unsound

wildcat is a noun but unsound is not a noun.

Word	Noun	Adjective	Verb	Adverb
wildcat	Yes	Yes	No	No
unsound	No	Yes	No	No

wildcat (noun)	unsound (noun)
any small or medium-sized cat resembling the domestic cat and living in the wild
an exploratory oil well drilled in land not known to be an oil field
a cruelly rapacious person

wildcat (adjective)	unsound (adjective)
(of a mine or oil well) drilled speculatively in an area not known to be productive	not sound financially
without official authorization	not in good condition; damaged or decayed
outside the bounds of legitimate or ethical business practices	suffering from severe mental illness
	containing or based on a fallacy
	physically unsound or diseased
	of e.g. advice