Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*drȗgъ
→
Polish
drugi
(derived)
→
Russian
другой
(inherited)
→
Silesian
drugi
(inherited)
→
Old Polish
drug
(inherited)