Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
trovar
←
Galician
trobar
(cognate)
←
Latin
*tropō
(mention)
←
Latin
tropus
(derived)
←
Old Occitan
trobar
(derived)
←
Old Portuguese
trobar
(inherited)
→
Galician
trobar
(cognate)
→
Portuguese
trova
(back-formation)