Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
drysi
←
Breton
drez
(cognate)
←
Welsh
dyrys
(affix)
←
Welsh
-i
(affix)
←
Irish
dris
(cognate)
←
Scottish Gaelic
dris
(cognate)
←
Cornish
dreys
(cognate)
→
Irish
dris
(cognate)
→
Scottish Gaelic
dris
(cognate)
→
Cornish
dreys
(cognate)