Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Irish
bogatóir
←
Middle Irish
boga
(affix)
←
Middle Irish
-tóir
(affix)
→
Irish
boghdóir
(inherited)
→
Scottish Gaelic
boghadair
(inherited)