Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
leugièr
←
Catalan
lleuger
(cognate)
←
French
léger
(cognate)
←
Latin
levis
(inherited)
→
Catalan
lleuger
(cognate)