Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
взаи́мный
→
Russian
взаимно
(affix)
→
Russian
взаимность
(link)
→
Ukrainian
взаємний
(cognate)