Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
pregar
←
Galician
chegar
(doublet)
←
Galician
preganza
(link)
←
Galician
pregaria
(link)
←
Galician
predicar
(doublet)
←
Galician
pregador
(link)
←
Latin
plicāre
(borrowed)
←
Latin
plicō
(mention)
←
Latin
precārī
(derived)
←
Latin
precor
(mention)
←
Latin
praedicō
(mention)
←
Old Portuguese
pregar
(inherited)
←
Old Portuguese
pregar
(inherited)
←
Old Portuguese
preegar
(inherited)
→
Galician
prego
(back-formation)