Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Upper Sorbian
jězor
←
Proto-Balto-Slavic
*eźera-
(inherited)
←
Proto-Slavic
*ezero
(inherited)
→
Lower Sorbian
jazor
(cognate)
→
Lower Sorbian
jazoro
(cognate)