Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Cornish
eglosyow
←
Cornish
eglos
(suffix)
←
Cornish
yow
(suffix)
→
Cornish
eglosyow teg
(affix)