Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
aranha
←
Catalan
aranya
(cognate)
←
French
araignée
(cognate)
←
Latin
arānea
(inherited)
←
Occitan
ronha
(doublet)
←
Old Occitan
(inherited)
→
Catalan
aranya
(cognate)
→
Occitan
telaranha
(compound)