Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
cydweithredu
←
Welsh
cyd-
(affix)
←
Welsh
gweithredu
(affix)
→
Welsh
cydweithrediad
(affix)
→
Welsh
cydweithredwr
(affix)