Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Alemannic German Ruew
German Ruh (cognate)
English roo (cognate)
Middle High German ruo (inherited)
Proto-West Germanic *rōu (inherited)
Old High German ruowa (inherited)
Icelandic (cognate)
Luxembourgish Rou (cognate)
Swedish ro (cognate)

Alemannic German ruewe (mention)
Alemannic German rüewig (suffix)
Alemannic German rüewig (link)