Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
kiart
←
Irish
ceart
(cognate)
←
Latin
certus
(derived)
←
Old Irish
cert
(inherited)
→
Manx
cochiartagh
(affix)
→
Manx
cochiart
(affix)
→
Manx
neuchiart
(affix)
→
Manx
kiartee
(suffix)
→
Manx
cochiartee
(confix)
→
Manx
mee-chiart
(prefix)