richness vs cornucopia

richness and cornucopia both are nouns.

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

As nouns, richness and cornucopia are synonyms defined as:

Other synonyms of richness include profuseness, profusion.

richness (noun)	cornucopia (noun)
a strong deep vividness of hue	the property of being extremely abundant
the property of a sensation that is rich and pleasing	a goat's horn filled with grain and flowers and fruit symbolizing prosperity
the property of producing abundantly and sustaining vigorous and luxuriant growth
the property of being extremely abundant
splendid or imposing in size or appearance
the quality of having high intrinsic value
abundant wealth