Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
beeal
←
Proto-Celtic
*wewlos
(inherited)
←
Welsh
gwefl
(cognate)
←
Irish
béal
(cognate)
←
Scottish Gaelic
beul
(cognate)
←
Cornish
gwevel
(cognate)
←
Old Irish
bél
(inherited)
→
Irish
béal
(cognate)
→
Scottish Gaelic
beul
(cognate)