Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
kerrin
←
Irish
cearnóg
(cognate)
←
Old Irish
cern
(inherited)
→
Manx
breck-cherrinagh
(affix)