Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
German Wahn
Proto-Germanic *wēniz (inherited)
Old High German wān (inherited)

English wane (cognate)
English ween (cognate)
Old English wen (cognate)
German Wahnvorstellung (compound)
German Wahnsinn (link)
German Größenwahn (affix)
German Argwohn (mention)
German wahnhaft (suffix)
German Dermatozoenwahn (mention)
German Rinderwahn (compound)
German Kontrollwahn (compound)