Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
kiartee
←
Manx
kiart
(suffix)
←
Manx
ee
(suffix)
→
Irish
ceartaigh
(cognate)
→
Manx
aachiartee
(prefix)