richness vs wilderness

richness and wilderness both are nouns.

Word	Noun	Adjective	Verb	Adverb
richness	Yes	No	No	No
wilderness	Yes	No	No	No

As nouns, wilderness is a hyponym of richness; that is, wilderness is a word with a more specific, narrower meaning than richness:

Other hyponyms of richness include overgrowth, greenness, verdancy, verdure.

richness (noun)	wilderness (noun)
a strong deep vividness of hue	a bewildering profusion
the property of a sensation that is rich and pleasing	a wild and uninhabited area left in its natural condition
the property of producing abundantly and sustaining vigorous and luxuriant growth	(politics) a state of disfavor
the property of being extremely abundant
splendid or imposing in size or appearance
the quality of having high intrinsic value
abundant wealth