Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
мерёжа
←
Russian
мре́жа
(doublet)
←
Proto-Slavic
*merža
(inherited)
→
Belarusian
мярэжа
(cognate)
→
Russian
мрежа
(doublet)