Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
drong
←
Proto-Celtic
*drungos
(inherited)
←
Old Irish
drong
(inherited)
→
Irish
aondrongach
(affix)
→
Irish
drongadóir
(affix)