Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
smeur
←
Proto-Celtic
*smiyoros
(inherited)
←
Welsh
mwyar
(cognate)
←
Irish
sméar
(cognate)
←
Middle Irish
smér
(inherited)
→
Irish
sméar
(cognate)