Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Celtic
*enistī
→
Breton
enez
(inherited)
→
Welsh
ynys
(inherited)
→
Irish
inis
(inherited)
→
Cornish
enys
(inherited)
→
Latin
insula
(cognate)
→
Old Irish
inis
(inherited)