Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
четы́ре
→
Belarusian
чатыры
(cognate)
→
Latvian
četri
(cognate)
→
Russian
четырежды
(affix)