Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Celtic
*kareti
→
Breton
karout
(inherited)
→
Welsh
caru
(inherited)
→
Irish
car
(inherited)
→
Old Irish
caraid
(inherited)