Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Irish
Proto-Celtic *rowos (inherited)
Proto-Celtic *rowis (derived)
Irish raon (mention)
Irish rae (alter)
Irish rae (alter)
Irish reo (alter)
Irish leathré (link)
Irish roimh ré (link)
Latin rūs (cognate)
Latin resono (derived)
Old Irish roe (inherited)
Old Irish (inherited)

Irish leathré (prefix)
Scottish Gaelic raon (cognate)