Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
ciúin
←
Old Irish
ciúin
(inherited)
→
Irish
ciúnas
(affix)
→
Irish
ciúine
(affix)
→
Irish
féithchiúin
(affix)