Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
dòth
←
Proto-Celtic
*dawyeti
(inherited)
←
Welsh
deifio
(cognate)
←
Irish
dóigh
(cognate)
←
Middle Irish
dóigid
(inherited)
←
Old Irish
dóïd
(inherited)
→
Irish
dóigh
(cognate)
→
Manx
daah
(cognate)
→
Cornish
dewi
(cognate)