Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Welsh caru
Proto-Brythonic *karɨd (inherited)
Proto-Celtic *kareti (inherited)
Proto-Indo-European *keh₂- (derived)

English Carys (mention)
Breton karout (cognate)
Welsh cariad (mention)
Welsh carwr (suffix)
Welsh gwladgarol (compound)
Welsh -gar (mention)
Welsh caredig (suffix)
Cornish kara (cognate)