Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
azen
←
Welsh
asyn
(cognate)
←
Latin
asinus
(borrowed)
→
Breton
azened
(suffix)
→
Welsh
asyn
(cognate)