Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
rusca
←
Gaulish
rusca
(derived)
←
Proto-Celtic
*rūskos
(derived)
←
Proto-Indo-European
*HrewH-
(derived)