Definitions:

1. a strong deep vividness of hue noun
   • the firelight gave a richness of coloring to that side of the room
2. abundant wealth noun
   • they studied forerunners of richness or poverty
3. the property of producing abundantly and sustaining vigorous and luxuriant growth noun
   • We praised the richness of the soil, for the harvest shall be abundant.
4. the quality of having high intrinsic value noun
   • the richness of the mines and pastureland

Synonyms:

• affluence
• cornucopia
• fertility
• magnificence
• mellowness
• profuseness
• profusion
• prolificacy
• rankness