Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
French cil
Proto-Indo-European (derived)
Proto-Indo-European *ḱel- (mention)
Latin cilium (borrowed)

Catalan cella (cognate)
French ciller (suffix)
French dessiller (confix)
French déciller (confix)
Romanian cil (borrowed)