Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Irish
séolaid
←
Middle Irish
séol
(affix)
←
Middle Irish
-aid
(affix)
→
Irish
seol
(inherited)
→
Scottish Gaelic
seòl
(inherited)
→
Manx
shiauill
(inherited)