Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
veredus
←
Gaulish
*werēdos
(derived)
←
Proto-Celtic
*uɸorēdos
(derived)
←
Welsh
gorwydd
(cognate)