Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
çhymnaghey
←
Irish
tiomnú
(cognate)
←
Manx
çhymney
(suffix)
←
Manx
aghey
(suffix)