Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
coirce
←
Breton
kerc'h
(cognate)
←
Proto-Celtic
*korkyom
(inherited)
←
Welsh
ceirch
(cognate)
←
Ancient Greek
κάχρυς
(cognate)
←
Proto-Indo-European
*kokro-
(derived)
←
Cornish
kergh
(cognate)
←
Old Irish
corca
(inherited)
←
Swedish
hagre
(cognate)