Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old Irish ette
Proto-Celtic *ɸettiyā (inherited)
Proto-Celtic *ɸeteti (mention)
Proto-Indo-European *peth₂- (root)
Proto-Indo-European *peth₂- (derived)

Welsh adar (cognate)
Welsh adain (cognate)
Irish eite (inherited)
Irish eiteach (mention)
Scottish Gaelic ite (inherited)
Manx fedjag (mention)