Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
derknesse
←
Old English
deorcnes
(inherited)
←
Middle English
derk
(suffix)
←
Middle English
nesse
(suffix)
→
English
darkness
(inherited)