Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Irish
rígdacht
←
Middle Irish
rígdae
(affix)
←
Middle Irish
-acht
(affix)
→
Irish
ríocht
(inherited)
→
Scottish Gaelic
rìoghachd
(inherited)
→
Manx
reeaght
(inherited)
→
Manx
riaght
(inherited)