Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
cramum
←
Breton
krammenn
(cognate)
←
Gaulish
*crama
(derived)
←
Proto-Celtic
*krammen
(derived)
←
Welsh
cramen
(cognate)
←
Proto-Indo-European
*(s)krama-
(derived)