Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Celtic
*rādīti
→
Welsh
adrodd
(derived)
→
Irish
abair
(derived)
→
Irish
abair
(derived(ga/gd))
→
Old Irish
ráidid
(inherited)