Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
tonn
←
Old Irish
tonn
(inherited)
→
Manx
tonnane
(suffix)
→
Manx
tonnagh
(affix)
→
Manx
fo-honn
(prefix)