Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Welsh cegin
Breton - (cognate)
Proto-Brythonic *kėgin (inherited)
Proto-Indo-European *pekʷ- (root)
Cornish kegin (cognate)
Latin coquīna (derived)
Middle Welsh kegyn (inherited)

Breton kegin (cognate)
Cornish kegin (cognate)