Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
бу́йный
→
Belarusian
буйны
(cognate)
→
Lower Sorbian
bujny
(cognate)
→
Russian
бушевать
(mention)