Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
er
→
Breton
brezhoneger
(suffix)
→
Breton
albaneger
(suffix)
→
Breton
saozneger
(suffix)
→
Breton
okitaneger
(suffix)
→
Breton
esperanteger
(suffix)
→
Breton
krampouezher
(suffix)
→
Breton
kivijer
(suffix)