Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
odyn
←
Proto-Celtic
*āti
(inherited)
←
Irish
áith
(cognate)
←
Proto-Indo-European
*ātr-
(inherited)
←
Middle Welsh
odyn
(inherited)
→
Northern Kurdish
agir
(cognate)