Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
cupán
←
Irish
cupa
(affix)
←
Irish
-án
(affix)
←
Old Irish
coppán
(inherited)
→
Irish
fochupán
(affix)