Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Portuguese
cousa
←
Latin
causa
(derived)
→
Galician
cousa
(inherited)
→
Old Spanish
cosa
(cognate)
→
Portuguese
coisa
(inherited)