Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
luna
←
Latin
lūna
(inherited)
←
Old Occitan
luna
(inherited)
→
Spanish
luna
(cognate)
→
Portuguese
lua
(cognate)