Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
рубёж
←
Russian
рубе́ж
(doublet)
←
Russian
руби́ть
(affix)
←
Russian
-ёж
(affix)
←
Proto-Slavic
*rǫbežь
(inherited)
→
Russian
рубеж
(doublet)