Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
peccah
←
Old Irish
peccad
(inherited)
→
Manx
ard-pheccah
(affix)
→
Manx
neupheccoil
(affix)
→
Manx
peccoil
(suffix)