Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
suan
←
Old English
swan
(inherited)
←
Old English
swān
(inherited)
→
Middle English
swan
(alter)
→
Middle English
swon
(alter)