Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Irish
deog
←
Proto-Celtic
*dī-āti-s
(derived)
←
Welsh
diod
(cognate)
←
Proto-Indo-European
*dʰeh₁(y)-
(derived)
←
Latvian
dažyti
(cognate)
←
Old Irish
deug
(inherited)