Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
луг
←
Proto-Slavic
*lǫgъ
(inherited)
→
Russian
луговой
(affix)
→
Russian
лужок
(affix)