Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Afrikaans onweer
Afrikaans on- (affix)
Afrikaans weer (affix)
Middle Dutch onweder (inherited)
Proto-Germanic *unwedrą (inherited)
Dutch onweer (inherited)
Old Dutch *unwedar (inherited)