Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Russian рот
Russian косоро́тый (link)
Russian у́стный (link)
Proto-Slavic *rъtъ (inherited)

English gargle (link)
Czech ret (cognate)
Romanian rât (cognate)
Russian пасть (link)
Russian ебало (link)
Russian ротовой (affix)
Russian косоротый (affix)
Russian ротик (affix)
Russian желторотый (affix)
Russian ротан (affix)