Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
doer
←
Middle English
don
(affix)
←
Middle English
-er
(affix)
→
English
doer
(inherited)
→
Middle English
don
(link)
→
Middle English
yvel doer
(affix)