Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
gwahaniaeth
←
Welsh
gwahanu
(affix)
←
Welsh
-iaeth
(affix)
→
Welsh
gwahaniaethu
(affix)
→
Welsh
gwahaniaethol
(affix)