Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Norwegian Nynorsk du
English thou (cognate)
Proto-Germanic *þū (inherited)
Proto-Indo-European *túh₂ (inherited)
Old Norse þú (inherited)

Norwegian Nynorsk dis (mention)
Norwegian Nynorsk dus (mention)