Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
eala
←
Old English
ēa
(affix)
←
Old English
lā
(affix)
←
Old Frisian
ēala
(cognate)
→
English
O
(link)