Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
adweitheg
←
Welsh
adwaith
(affix)
←
Welsh
-eg
(affix)
→
Welsh
adweithegydd
(affix)
→
Welsh
adweithegwyr
(affix)