Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
ochr
←
Proto-Celtic
*okris
(inherited)
←
Irish
achar
(cognate)
←
Proto-Indo-European
*h₂óḱris
(inherited)
←
Latin
ocris
(cognate)