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