Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
trémulo
←
Galician
tremo
(doublet)
←
Latin
tremulus
(borrowed)
→
Galician
tremo
(doublet)
→
Galician
trémbora
(doublet)