Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
oisté-
→
Irish
oisté-eolaí
(affix)
→
Irish
oistéablast
(affix)
→
Irish
oistéaclast
(affix)