Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
Cadogan
←
Welsh
Cadwgan
(mention)
←
Welsh
cad
(mention)
←
Welsh
gwgan
(mention)
→
English
Cadigan
(mention)