Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
Ynys Manaw
←
Proto-Brythonic
*manawiā
(inherited)
←
Welsh
ynys
(mention)
←
Welsh
cel-bry-pro
(mention)