Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Irish tóin
Proto-Celtic *tuknā (inherited)
English thigh (cognate)
Scottish Gaelic tòin (cognate)
Proto-Indo-European *tewk- (derived)
Old Irish tón (inherited)

English thigh (cognate)
Irish atóin (prefix)
Sanskrit तोक (cognate)