Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
urusa
←
Old Irish
ar
(mention)
←
Old Irish
assu
(mention)
→
Irish
furasta
(inherited)
→
Scottish Gaelic
furasta
(inherited)