Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
oleiro
←
Latin
ōlla
(inherited)
←
Portuguese
-eiro
(mention)
←
Old Portuguese
ola
(mention)
→
Romanian
olar
(cognate)