Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Proto-Indo-European *plōw-

→ English flow (derived)
→ French flotter (mention)
→ French flot (derived)
→ Old French flot (derived)
→ Old French floter (mention)
→ Walloon floter (mention)