Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Portuguese
por
→
Fala
por
(inherited)
→
Galician
por
(inherited)
→
Galician
porén
(mention)
→
Portuguese
por
(inherited)
→
Portuguese
polo
(mention)
→
Portuguese
porém
(mention)