Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
deiziadur
←
Breton
deiz
(affix)
←
Breton
-adur
(affix)
←
Welsh
dyddiadur
(calque)