Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
вал
←
Bulgarian
валя́
(cognate)
←
Russian
вал
(borrowed)
←
Proto-Slavic
*valъ
(inherited)
→
Bulgarian
валог
(affix)
→
Bulgarian
превал
(prefix)
→
Bulgarian
увал
(prefix)