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