Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
French sûr
← Middle French sceur (inherited)
← Old French seür (inherited)
← Latin sēcūrus (inherited)

→ French assurer (affix)
→ French sûrement (affix)
→ French sûreté (suffix)
→ Norman seux (mention)
→ Portuguese seguro (cognate)