Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
dé
←
Proto-Celtic
*dwīyūss
(inherited)
←
Proto-Indo-European
*dʰewh₂-
(derived)
←
Old Irish
dé
(inherited)
→
Irish
dia
(link)
→
Irish
Déardaoin
(mention)