Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
díol
←
Proto-Celtic
*di-layo-
(inherited)
←
Proto-Indo-European
*leh₁w-
(derived)
←
Old Irish
dílaid
(inherited)
←
Old Irish
díl
(mention)
←
Old Irish
do·lá
(mention)
→
Irish
miondíol
(affix)
→
Irish
mórdhíol
(affix)