Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
bainisteoir
→
Irish
bainisteoireacht
(affix)
→
Irish
bainistigh
(back-formation)
→
Irish
fo-bhainisteoir
(affix)
→
Irish
bainisteoireach
(affix)