Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
treinar
←
Old French
trahiner
(derived)
←
Galician
treina
(link)
→
Galician
treina
(back-formation)
→
Galician
traíña
(mention)