Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
peigne
←
Old French
peigne
(inherited)
←
Latin
pecten
(inherited)
→
French
pignon
(suffix)
→
Franco-Provençal
pégno
(cognate)
→
Portuguese
pente
(cognate)