czar |ˈzɑːr| — a male monarch or emperor (especially of Russia prior to 1917)

czardas |ˈtʃɑːrdɑːʃ| — An intricate Hungarian folk dance characterized by variations in tempo

czarevitch |ˈzɑːrəvɪtʃ| — Alternative spelling of tsarevich.

czarina |zɑːrˈriːnə| — the wife or widow of a czar

Czech |tʃek| — a native of inhabitant of the Czech Republic

Czechoslovak |ˌtʃekəʊˈsləʊvæk| — a native or inhabitant of the former republic of Czechoslovakia