Abstract
1. Introduction
2. Semantic Chanres
2.1. Characteristics of Semantic Change
2.2 Lexical Sources
2.3. Semantic Chance of Top
2.4. Semantic Chance of Bottom
3. Syntactic Characteristics
3.1. Categoriafl Change
3.2. Paradigmatic Change
4. Distributional Characteristics
4.1. Role of Frequency
4.2. Semantic Specialization
5. Conclusion
References