Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
cruittire
←
Old Irish
crott
(suffix)
←
Old Irish
aire
(suffix)
→
Irish
cruitire
(inherited)
→
Manx
cruitçheragh
(derived)