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.
semiannual, biannual, biyearly, half-yearly
(adjective) occurring or payable twice each year
biennial, biyearly
(adjective) occurring every second year; “they met at biennial conventions”
semiannually, biyearly
(adverb) twice a year
biennially, biyearly
(adverb) every two years; “this festival takes places biennially”
Source: WordNet® 3.1
biyearly (not comparable)
Occurring every two years; biennial
Occurring twice per year; biannual
biyearly (not comparable)
Every two years; biennially
Twice per year; biannually
Source: Wiktionary
24 February 2025
(noun) (astronomy) position of a planet as defined by its angular distance from its perihelion (as observed from the sun)
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.