Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
Konogan
←
Breton
Koneg
(suffix)
←
Breton
an
(suffix)
←
Breton
Gwenneg
(mention)
→
French
Conogan
(borrowed)