Focus on the pronunciation of specialization
English definition of “specialization”
/ˌspeʃ·ə·ləˈzeɪ·ʃən/ n [C/U]
› the limiting of one’s study or work to one particular area, or a particular area of knowledge: [C] My main specialization was literature. › biology Specialization is also the development in organisms of cells that have particular purposes.