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.
brainstem, brain-stem, brain stem
(noun) the part of the brain continuous with the spinal cord and comprising the medulla oblongata and pons and midbrain and parts of the hypothalamus
Source: WordNet® 3.1
brainstem (plural brainstems)
Alternative spelling of brain stem
• tribesman
Source: Wiktionary
14 June 2025
(noun) a member of a learned society; “he was elected a fellow of the American Physiological Association”
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.