Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
роить
←
Belarusian
раі́ць
(cognate)
←
Russian
рой
(affix)
←
Russian
-и́ть
(affix)
←
Ukrainian
рої́ти
(cognate)