Yam (vegetable) Yam (vegetable) Yam is the common name for some plant species in the genus "Dioscorea" (family Dioscoreaceae) that form edible tubers. Yams are perennial herbaceous vines cultivated for the consumption of their starchy tubers in many temperate and tropical world regions. The tubers themselves are also called "yams", having numerous cultivars and related species. In parts of the United States and Canada, "yam" is sometimes used to refer to varieties of the unrelated sweet potato ("Ipomoea batatas"). The name, yam, appears to derive from Portuguese "inhame" or Canarian (Spain) "ñame", which derived from West African languages during trade. The main
Varieties of Arabic the same sentence in German and Dutch: Or in Spanish and Portuguese: Some linguists do argue that the varieties of Arabic are different enough to qualify as separate languages in the way that Spanish and Portuguese or German and Dutch do. However, as Reem Bassiouney points out, perhaps the difference between 'language' and 'dialect' is to some degree political rather than linguistic. "Peripheral" varieties of Arabic – that is, varieties spoken in countries where Arabic is not a dominant language and a lingua franca (e.g., Turkey, Iran, Cyprus, Chad, and Nigeria) – are particularly divergent in some respects, especially in