Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
foirgneamh
←
Proto-Celtic
*uɸor-
(mention)
←
Proto-Indo-European
*ǵenh₁-
(root)
←
Middle Irish
forgnem
(inherited)
←
Old Irish
for-
(derived)
←
Old Irish
gním
(mention)