Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Irish
Bretnach
←
Middle Irish
Bretain
(suffix)
←
Middle Irish
ach
(suffix)
→
Irish
Breatnach
(inherited)
→
Scottish Gaelic
Breatannach
(inherited)
→
Scottish Gaelic
Breatnach
(inherited)
→
Manx
Bretnagh
(inherited)