Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Cornish
esedhvos
←
Welsh
eisteddfod
(calque)
←
Cornish
esedha
(affix)
←
Cornish
bos
(affix)