Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
caora
←
Proto-Celtic
*kaɸrāxs
(inherited)
←
Irish
caoraibh
(link)
←
Old Irish
cáera
(inherited)
→
Irish
caoireoil
(affix)
→
Irish
athchaora
(affix)