Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old English col
Middle English coul (link)
Middle English cool (link)
Proto-Germanic *kōluz (inherited)
Proto-Germanic *kōlaz (mention)
Proto-Germanic *kulą (inherited)
Old High German kuoli (cognate)
Old High German kolo (cognate)
Proto-Indo-European *gel- (root)
Old Norse kol (cognate)
Old Frisian kole (cognate)
Scots cuill (link)
Scots kuil (link)

English charcoal (mention)
English coal (inherited)
English Cole (derived)
English Colgate (inherited)
Old English colsweart (compound)
Old High German kol (cognate)
Sanskrit ज्वलति (cognate)