Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
sowre
←
Old English
sūr
(inherited)
←
Old French
sor
(borrowed)
→
Middle English
sour
(alter)
→
Middle English
sor
(alter)