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