Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
eisteddfod
←
Welsh
eisteddfod
(unadapted borrowing)
←
Welsh
eistedd
(affix)
←
Welsh
bod
(affix)
→
English
eisteddfodic
(affix)