Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Occitan
negre
←
Old French
noir
(cognate)
←
Old French
neir
(mention)
←
Latin
nigrum
(inherited)
←
Latin
niger
(mention)
→
Catalan
negre
(inherited)
→
Occitan
negre
(inherited)