Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
roie
←
Proto-Celtic
*reteti
(inherited)
←
Proto-Indo-European
*Hret-
(derived)
←
Old Irish
reithid
(inherited)
→
Manx
neuroieder
(confix)
→
Manx
roieder
(suffix)
→
Manx
roie-smooinit
(prefix)
→
Manx
roie-hoie
(prefix)