Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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French éther
Ancient Greek αἰθήρ (mention)
Latin aethēr (mention)

English ether (cognate)
French éthéré (suffix)
French thioéther (prefix)
French éthérique (suffix)
French éthériser (suffix)
Polish eter (borrowed)
Romanian eter (borrowed)