Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Sardinian
abba
←
Proto-Indo-European
*h₂ekʷeh₂
(inherited)
←
Proto-Italic
*akʷā
(inherited)
←
Latin
aqua
(inherited)
←
Romanian
apă
(cognate)
→
Spanish
agua
(cognate)
→
Romanian
apă
(cognate)