Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Franco-Provençal
avouéc
→
Norman
aveuc
(cognate)
→
Bourguignon
aivô
(mention)
→
Champenois
aveu
(cognate)