Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
álgido
←
English
algor
(cognate)
←
Spanish
álgido
(cognate)
←
Italian
algente
(cognate)
←
Latin
algidus
(derived)
→
Portuguese
algidez
(affix)