Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old English rotian
← Proto-Germanic *rutāną (inherited)
← Proto-Indo-European *Hrewd- (derived)

→ English rotten (cognate)
→ English rot (inherited)
→ English rotting (mention)
→ Old English rotung (suffix)
→ Catalan ròssa (link)
→ Middle English roten (inherited)