The nomenclature developed for the vernacular regions combines acronyms for each climate zone, language family and continent into a hyphenated code. The sequence was chosen to be Climate Zone – Language Family – Continent; for instance, Nome is in the area called CS-DC-NA, which stands for Continental Subarctic climate, Dene-Caucasian language and North America continent. Nadi, instead, is in the region TS-AUC-OC, which stands for Tropical savanna climate, Austric language and Oceania continent.
This first literature research can’t be used to define precise boundaries for each vernacular region, but the approach of Zhai and Previtali is acceptable because each region is intended to highlight an area where a unique example of vernacular architecture can be found. In fact, since specific data about the location assigned are not always available, considering the regions just defined, for what concerns Nome (Alaska) it’ll be possible to analyse in depth the examples of vernacular architecture of Canada and the northern states of USA and for Nadi (Fiji Islands) the southern part of China.