Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
-eg
←
Welsh
-eg
(cognate)
→
Breton
gallaoueg
(mention)
→
Breton
zedacheg
(affix)
→
Breton
skolveurieg
(suffix)