Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
jaagh
←
Irish
deatach
(cognate)
←
Middle Irish
deathach
(inherited)
←
Old Irish
dé
(derived)
→
Manx
neuyaagheyder
(confix)
→
Manx
jaagheyder
(suffix)