Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Cornish
ostel
→
Cornish
karrostel
(compound)
→
Cornish
ostelyow
(suffix)
→
Cornish
ostel yowynkneth
(affix)