Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
scoith
←
Proto-Celtic
*skutā
(derived)
←
Proto-Indo-European
*skewt-
(derived)
←
Middle Irish
scothaid
(inherited)
←
Middle Irish
scoth
(mention)