Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Asturian
principiu
←
Catalan
principi
(cognate)
←
Spanish
principio
(cognate)
←
Latin
prīncipium
(inherited)
←
Portuguese
princípio
(cognate)