Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
fuòc
←
Latin
focus
(inherited)
←
Old Occitan
foc
(inherited)
→
Dalmatian
fuc
(mention)
→
Friulian
fûc
(cognate)
→
Occitan
afogar
(confix)
→
Portuguese
fogo
(cognate)