Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Dalmatian
plain
←
French
plein
(cognate)
←
Italian
pieno
(cognate)
←
Latin
plēnus
(inherited)
←
Romansch
plain
(cognate)
←
Romanian
plin
(cognate)