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.
ISTHMUS
isthmus, band
(noun) a cord-like tissue connecting two larger parts of an anatomical structure
isthmus
(noun) a relatively narrow strip of land (with water on both sides) connecting two larger land areas
Source: WordNet® 3.1
Etymology
Noun
isthmus (plural isthmuses or isthmi)
A narrow strip of land, bordered on both sides by water, and connecting two larger landmasses.
(anatomy) Any such narrow part connecting two larger structures.
(graph theory) An edge in a graph whose deletion increases the number of connected components of the graph.
Source: Wiktionary
Isth"mus, n.; pl. Isthmuses. Etym: [L. isthmus, Gr. 'isqmo`s a neck, a neck of land between two seas, an isthmus, especially the Isthmus of Corinth; prob. from the root of 'ie`nai to go; cf. Icel. eiedh isthmus. See Issue.] (Geog.)
Definition: A neck or narrow slip of land by which two continents are connected, or by which a peninsula is united to the mainland; as, the Isthmus of Panama; the Isthmus of Suez, etc. Isthmus of the fauces. (Anat.) See Fauces.
Source: Webster’s Unabridged Dictionary 1913 Edition
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