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