Polysemy is a universal phenomenon which shows economical, creative, flexible of human language and reflects the approach people use for cognition. This research compares English to Kurdish language of selecting human body parts, namely mouth, heart and eye for the process and the ways of human body words. From the perspective of lexical semantics and prototype theory, the study of the semantic extension of polysemy in both languages explores the process of meaning extension and the reasons for meaning extension. The method of the present research is a descriptive and comparative in nature. The objective of the study is comparing two distinct cultures using polysemy and depending on the lexemes of English and Kurdish languages. The data of this research are collected from dictionaries of the English and Kurdish languages. The significance of this research is the investigation of relation between English and Kurdish languages in terms of polysemy. On the other hand, linguistic researches across cultures are not easy tasks when they concern polysemy, because it needs to study enough about both languages. The essential point is that to note any differences in the domain and to show certain similarities underlying the phenomena as a frame against which to compare them. Comprehending the research procedures is vital, especially to start with a brief presentation of theoretical models and measurement implications of polysemy in English and Kurdish language. From polysemous point of view, the study depends on Henbaneborine Dictionary and Cambridge Dictionary. Keywords: Meaning Extension, Prototype Theory, English Language, Kurdish Language, Body Organs