Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
Doubs
←
Proto-Celtic
*dubus
(derived)
←
Proto-Celtic
*dubus
(derived(en/fr))
←
French
Doubs
(borrowed)
→
Scottish Gaelic
dubh
(mention)