Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
легко
←
Russian
лёгкий
(affix)
←
Russian
-о
(affix)
←
Proto-Slavic
*lьgъkъ
(inherited)
→
Russian
легонько
(affix)