Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
curadh
←
Middle Irish
curad
(inherited)
←
Old Irish
caur
(inherited)
→
Welsh
cawr
(cognate)
→
Ancient Greek
κῦρος
(cognate)