Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
aquell
←
Latin
eccum
(inherited)
←
Latin
ille
(mention)
←
Old Occitan
(inherited)
→
Interlingua
aquelle
(cognate)
→
Romanian
acel
(cognate)
→
Sardinian
cuddu
(cognate)