Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
cwtch
←
Welsh
cwtsh
(borrowed)
←
English
couch
(doublet)
←
Middle English
couche
(derived)
→
English
couch
(doublet)