Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Irish
gillán
←
Middle Irish
gilla
(affix)
←
Middle Irish
-án
(affix)
←
Old Irish
gell
(affix)
←
Old Irish
-án
(affix)