Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Cornish
bew
→
Cornish
bewnans
(suffix)
→
Cornish
bownans
(suffix)
→
Cornish
bewskrif
(affix)