“All words belonging to the same isogloss must have sound correspondences and clear similarities in form and meaning.”

“A common tool in these maps is an isogloss, a line separating areas where different variants of a particular feature predominate.”

“Here again, the participating Taimyrian languages Forest Enets, Tundra Enets, Nganasan, Dolgan and Evenki behave similarly, but this isogloss stretches further south and east.”

“Each major area is enclosed by a large number of isoglosses representing differences in lexis, grammar, and phonology.”

“Such boundaries are called isoglosses and are themselves subjected to various shades of definition.”

“However, the conclusion maps used in the research are not synthetic but they are drawn up using isoglosses to present the findings.”