Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
cáise
←
Latin
cāseus
(borrowed)
→
Irish
cáis
(inherited)
→
Scottish Gaelic
càise
(inherited)
→
Manx
caashey
(inherited)