Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
pedreiro
←
Asturian
pedreru
(cognate)
←
Catalan
pedrer
(cognate)
←
Spanish
pedrero
(cognate)
←
Ancient Greek
πέτρα
(derived)
←
Latin
petra
(derived)
←
Occitan
peirièr
(cognate)
←
Romanian
pietrar
(cognate)
←
Old Portuguese
pedreiro
(mention)
←
Old Portuguese
pedra
(mention)
←
Old Portuguese
-eiro
(mention)
→
Romanian
pietrar
(cognate)