Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
muintir
←
Old Irish
muinter
(inherited)
→
Irish
muinteartha
(affix)
→
Irish
muintearas
(affix)
→
Manx
mooinjer
(cognate)