Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Welsh rhydd
Proto-Brythonic *rrɨð (inherited)
Proto-Celtic *ɸriyos (inherited)
Welsh rhyddid (link)
Welsh rhy (link)
Welsh dyry (link)
Proto-Indo-European *preyH- (root)
Proto-Indo-European *priHós (inherited)
Proto-Indo-European *preyH- (mention)

Welsh rhy (link)
Welsh rhyddid (suffix)
Welsh rhyddhau (affix)
Welsh rhydd-ddeiliad (affix)
Welsh heintrydd (compound)
Ancient Greek πρᾶος (cognate)
Latin proprius (cognate)