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.
aquanaut, oceanaut
(noun) a skilled worker who can live in underwater installations and participate in scientific research
aquanaut, skin-diver
(noun) an underwater swimmer equipped with a face mask and foot fins and either a snorkel or an air cylinder
Source: WordNet® 3.1
aquanaut (plural aquanauts)
An underwater explorer.
Source: Wiktionary
17 May 2025
(noun) sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed
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.