Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
ciúnas
←
Irish
ciúin
(affix)
←
Irish
-as
(affix)
←
Middle Irish
ciúnas
(inherited)
→
Manx
kiunys
(cognate)