Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Russian чад
Proto-Indo-European *kʷēd-o- (inherited)
Russian чади́ть (link)
Russian чадно (link)
Russian чадный (link)
Proto-Slavic *čadъ (inherited)

Russian чадить (affix)