Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
amcan
←
Welsh
am-
(prefix)
←
Welsh
(prefix)
←
Proto-Indo-European
*skey-
(derived)
→
Welsh
amcangyfrif
(affix)
→
Welsh
amcanu
(affix)