Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
forhard
←
Old English
forheardian
(inherited)
←
English
for
(prefix)
←
English
hard
(prefix)
←
Middle English
forhardien
(inherited)
→
English
forharden
(link)