Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
caomh
←
Proto-Celtic
*koimos
(inherited)
←
Proto-Indo-European
*ḱóymos
(inherited)
←
Old Irish
cóem
(inherited)