Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
doon
←
Proto-Celtic
*dūnom
(inherited)
←
Manx
dooin
(link)
←
Old Irish
dúnaid
(inherited)
←
Old Irish
dúinid
(mention)
←
Old Irish
dún
(inherited)
→
Manx
dooin
(link)
→
Manx
dooney
(suffix)