Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Belarusian
жарало
←
Polish
źródło
(cognate)
←
Russian
жерело́
(cognate)
←
Proto-Slavic
*žerdlo
(inherited)
←
Ukrainian
джерело́
(cognate)