Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Celtic
*teɸnets
→
Breton
tan
(inherited)
→
Welsh
tân
(inherited)
→
Scottish Gaelic
teine
(inherited)
→
Manx
çhenney
(inherited)
→
Cornish
tan
(inherited)
→
Old Irish
teine
(inherited)