Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Swedish
køpa
←
Proto-Germanic
*kaupijaną
(inherited)
←
Old Norse
keypa
(inherited)
←
Old Norse
kaupa
(mention)
→
Swedish
köpa
(inherited)