Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
Петербу́рг
→
Polish
Petersburg
(borrowed)
→
Russian
петербуржец
(affix)
→
Russian
Питер
(clipping)
→
Russian
Питер
(link)
→
Russian
петербургский
(affix)