Sign, symbol, emblem: conceptual differentiation

The basic semiotic terms - sign, symbol, emblem - are analyzed. Generalization of the existing notions allows to state that signs are things, objects, or phenomena which denote other things, objects, or phenomena. Symbol can be considered a variety of sign, it is socially significant, emotionally expressive, and polysemous. Emblem is a variety of sign with great semantic substantiation.