Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
Tiverton
←
Welsh
Teifi
(cognate)
←
English
*Tiver
(mention)
←
English
-ton
(mention)
→
Welsh
Teifi
(mention)