Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Greek κλειδί
Ancient Greek κλειδίον (inherited)
Ancient Greek κλείς (mention)
Proto-Hellenic *klāwī́ds (inherited)
Proto-Indo-European *kleh₂u- (derived)

Greek μπουζόκλειδο (compound)
Greek κλειδαριά (suffix)