Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
íccaid
←
Old Irish
ícc
(affix)
←
Old Irish
-aid
(affix)
→
Irish
íoc
(inherited)
→
Manx
eeck
(inherited)