conductor [conductors](something which can transmit electricity, heat, light or sound) noun [UK: kən.ˈdʌk.tə(r)] [US: kən.ˈdək.tər]
半導體noun
semiconductor [semiconductors](substance with electrical properties between conductor and insulator) noun [UK: ˌse.mɪk.ən.ˈdʌk.tə(r)] [US: ˌse.mik.ən.ˈdək.tər]