Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
cocubus
←
Latin
cōnfessiō
(derived)
←
Old Irish
com
(prefix)
←
Old Irish
cubus
(prefix)
←
Old Irish
cobais
(mention)
←
Old Irish
com-
(mention)
←
Old Irish
fis
(mention)
→
Scottish Gaelic
cogais
(inherited)