DEMARCATION

US also demarkation [noun]The river serves as the line of demarcation (= the line showing the separation) between the two counties. [U]In some schools, there is little demarcation between subjects (= subjects are not taught separately). [U]On this map, demarcations between (= the limits of) regions are shown with dotted lines. [C]There is a clear demarcation line (= separation) between the responsibilities of doctors and nurses.(UK and ANZ) A demarcation dispute is a disagreement between trade unions (= organizations of workers) about what types of work should be done by the members of each of them.