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.
unburnished
(adjective) of metals e.g.; not made shiny and smooth by friction
Source: WordNet® 3.1
unburnished (not comparable)
Not burnished.
Source: Wiktionary
28 June 2025
(adjective) having an allergy or peculiar or excessive susceptibility (especially to a specific factor); “allergic children”; “hypersensitive to pollen”
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.