Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Danish
kæk
←
Danish
kvik
(doublet)
←
German
keck
(derived)
←
Proto-Germanic
*kwikwaz
(derived)
→
Danish
kvik
(doublet)