Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
dín
←
Proto-Celtic
*dênu
(inherited)
←
Proto-Indo-European
*dʰeh₁-
(derived)
→
Irish
díon
(inherited)
→
Scottish Gaelic
dhinn
(inherited)
→
Scottish Gaelic
dìon
(inherited)