Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
cuimnigid
→
Irish
cuimhnigh
(inherited)
→
Scottish Gaelic
cuimhnich
(inherited)
→
Manx
cooinee
(inherited)