Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Dutch
heidendom
←
Middle Dutch
heidijndoem
(inherited)
←
Dutch
heiden
(suffix)
←
Dutch
dom
(suffix)
→
English
heathendom
(cognate)