Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
fynn
←
Irish
fionn
(cognate)
←
Old Irish
finn
(inherited)
→
Manx
Fynn-Loghlynagh
(affix)