Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
flaithius
←
Old Irish
flaith
(affix)
←
Old Irish
-as
(affix)
→
Scottish Gaelic
flaitheas
(inherited)
→
Old Irish
comflaithius
(prefix)