Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
kelenner
→
Breton
kelennerez
(suffix)
→
Breton
kelenn
(link)
→
Breton
kelennerien
(suffix)