Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
moyl
←
Proto-Celtic
*molātor
(inherited)
←
Irish
mol
(cognate)
←
Scottish Gaelic
mol
(cognate)
←
Middle Irish
molaid
(inherited)
←
Old Irish
molaidir
(inherited)
→
Irish
mol
(cognate)
→
Scottish Gaelic
mol
(cognate)
→
Manx
ard-voyl
(prefix)