Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
reto
←
Latin
rectus
(borrowed)
←
Portuguese
recto
(mention)
←
Portuguese
recto
(mention)
←
Old Portuguese
reyto
(cognate)
→
Portuguese
caso reto
(mention)