Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
delienn
←
Breton
del
(mention)
←
Proto-Brythonic
(inherited)
←
Proto-Celtic
(inherited)
←
Welsh
dail
(cognate)
←
Proto-Indo-European
*dʰelh₁-
(root)
←
Proto-Indo-European
*dʰelh₁-
(mention)
→
Middle Irish
duille
(cognate)