Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
German Römer
German Rom (affix)
German -er (affix)

English rummer (derived)
English Roemer (borrowed)
English Romer (derived)
Danish romer (cognate)
German Rom (link)
German Römerbrief (affix)
German Römerzeit (compound)
German Römertopf (affix)
German Römertum (suffix)
Russian рюмка (borrowed)