[noun] the ratio of live births in an area to the population of that area; expressed per 1000 population per year Synonyms:birthrate, birth rate, rate, natality
[noun] the state of being fertile; capable of producing offspring Synonyms:fecundity
[noun] the property of producing abundantly and sustaining growth; "he praised the richness of the soil" Synonyms:richness, prolificacy
