Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romani
suno
←
Istriot
sugno
(cognate)
←
Italian
sogno
(cognate)
←
Latin
somnium
(derived)
←
Phalura
sū
(cognate)
←
Prasuni
sǖ
(cognate)
←
Romanian
somn
(cognate)