Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
had
←
Proto-Celtic
*satos
(inherited)
←
English
seed
(cognate)
←
Proto-Indo-European
*seh₁-
(derived)