Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Gallo
faoucher
←
French
faucher
(cognate)
←
Proto-Indo-European
*dhalk-
(derived)
←
Proto-Indo-European
*dhalg-
(mention)
←
Italian
falciare
(cognate)
←
Latin
falx
(derived)
→
Gallo
faouchou
(suffix)