Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
boyn
←
Irish
bonn
(cognate)
←
Scottish Gaelic
bonn
(cognate)
←
Middle Irish
bonn
(inherited)
→
Manx
ard-voynnagh
(affix)