Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Germanic
*kaupijaną
→
English
cheap
(mention)
→
Danish
købe
(mention)
→
Old Swedish
køpa
(inherited)
→
Polish
kupić
(mention)
→
Swedish
köpa
(inherited)