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