The word "全国" is formed by combining two distinct characters: "全", which means "whole" or "entire", and "国", which means "country" or "nation". The formation is conceptually straightforward, where the first character "全" modifies and describes the scope of the second character "国", creating a new, single concept that translates directly as "whole country" or "the entire nation". It is a direct semantic fusion of these two ideas into one compound unit.