Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
grèc
←
Catalan
grec
(cognate)
←
Ancient Greek
Γραικός
(derived)
←
Latin
graecus
(inherited)
→
Catalan
grec
(cognate)