Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Celtic
*ɸēskos
→
Welsh
Wysg
(inherited)
→
Irish
iasc
(inherited)
→
Scottish Gaelic
iasg
(inherited)
→
Old Irish
íasc
(inherited)