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Synonyms for Richness (same or very similar meaning)

WordNet sense 1 (abundant wealth):
affluence

WordNet sense 2 (the property of producing abundantly and sustaining vigorous and luxuriant growth):
fertility, rankness, prolificacy

WordNet sense 3 (the property of being extremely abundant):
cornucopia, profuseness, profusion

WordNet sense 4 (the property of a sensation that is rich and pleasing):
fullness, mellowness

WordNet sense 5 (splendid or imposing in size or appearance):
grandness, impressiveness, magnificence


From the ODE community, based on WordNetadd/edit