Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
ull
←
Catalan
òcul
(doublet)
←
Proto-Indo-European
*h₃okʷ-
(derived)
←
Proto-Indo-European
*h₃ekʷ-
(mention)
←
Proto-Italic
*okelos
(inherited)
←
Latin
oculus
(inherited)
←
Old Occitan
olh
(inherited)
→
Catalan
ullblau
(compound)
→
Catalan
ullal
(mention)
→
Catalan
òcul
(doublet)
→
Catalan
ullada
(suffix)
→
Catalan
de reüll
(prefix)
→
Catalan
ullprendre
(compound)
→
Catalan
ullera
(affix)
→
French
œil
(cognate)