Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
apo
←
Proto-Germanic
*apô
(inherited)
←
Old High German
affo
(mention)
←
Old Norse
api
(mention)
→
Old English
apa
(cognate)