Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
ríar
←
Irish
réir
(link)
→
Irish
riar
(inherited)
→
Irish
réir
(derived)
→
Scottish Gaelic
riaraich
(derived)