Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
Sarn
←
Old Irish
Satharn
(inherited)
→
Irish
Satharn
(cognate)
→
Manx
Sarnagh
(affix)