Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Celtic
*sūlos
→
Irish
súil
(mention)
→
Scottish Gaelic
sùil
(mention)
→
Manx
sooill
(mention)
→
Old Irish
súil
(mention)