Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bourguignon
on
→
Bourguignon
gâçon
(suffix)
→
Bourguignon
roïon
(suffix)
→
Bourguignon
côdon
(suffix)