There are four varieties of commercially viable coffee: Arabica, Liberica, Excelsa, and Robusta. Growers predominantly plant the Arabica species. Although less popular, Robusta tastes slightly more bitter and contains more caffeine.
HARTLEY
Hartley, David Hartley
(noun) English philosopher who introduced the theory of the association of ideas (1705-1757)
Source: WordNet® 3.1
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14 June 2025
FELLOW
(noun) a member of a learned society; “he was elected a fellow of the American Physiological Association”
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