Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
queller
←
Old English
cwellere
(inherited)
←
Middle English
quellen
(affix)
←
Middle English
-er
(affix)
→
English
queller
(inherited)