Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
féria
←
Latin
feria
(mention)
←
Latin
feriae
(mention)
←
Portuguese
feira
(mention)
→
Portuguese
feriado
(affix)
→
Portuguese
feira
(doublet)