Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Proto-Germanic *klajjaz

English clay (inherited)
Afrikaans klei (inherited)
Old English clæg (inherited)
Bulgarian клей (derived)
West Frisian klaai (inherited)
Ancient Greek γλία (cognate)
Ancient Greek γλίνη (cognate)
Ancient Greek γλοιός (cognate)
Dutch klei (inherited)
Polish klej (mention)
Russian клей (derived)
Saterland Frisian Kloai (inherited)
Yiddish קליי (derived)