Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Dutch
deler
←
Middle Dutch
dêelre
(inherited)
←
Dutch
delen
(affix)
←
Dutch
-er
(affix)
→
English
dealer
(cognate)