Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
fauç
←
Catalan
falç
(cognate)
←
Spanish
hoz
(cognate)
←
French
faux
(cognate)
←
Proto-Indo-European
*dʰelg-
(mention)
←
Latin
falx
(inherited)
←
Old Occitan
(inherited)
→
Catalan
falç
(cognate)
→
Sardinian
falche
(cognate)