Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
goleuo
←
Welsh
golau
(affix)
←
Welsh
-o
(affix)
←
Proto-Indo-European
*lewk-
(root)
→
Welsh
goleuad
(affix)
→
Welsh
goleuedig
(affix)