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.
ballonet (plural ballonets)
Any of several small balloons, inside a dirigible, that can be inflated or deflated to control buoyancy during flight.
Source: Wiktionary
25 June 2024
(noun) any of a group of hard glassy minerals (silicates of various metals) used as gemstones and as an abrasive
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.