Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
cella
←
Spanish
ceja
(cognate)
←
French
cil
(cognate)
←
Proto-Indo-European
(inherited)
←
Proto-Indo-European
*ḱel-
(mention)
←
Latin
cilia
(inherited)
←
Latin
cilium
(mention)
←
Occitan
cilha
(cognate)
→
Catalan
cellut
(affix)