Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Latin pumex
Proto-Indo-European *(s)poH(y)- (root)
Proto-Indo-European *(s)poH(y)- (derived)
Latin spūma (mention)

English pumicate (mention)
German Bims (derived)
Spanish pómez (inherited)
Italian pomice (mention)
Polish pumeks (derived)
Russian пемза (derived)