Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
pozo
←
Spanish
pozo
(cognate)
←
Latin
puteus
(inherited)
←
Portuguese
poço
(cognate)
←
Old Portuguese
poço
(inherited)
→
Galician
poceiro
(suffix)
→
Portuguese
poço
(cognate)