Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
гребен
←
Bulgarian
гроб
(link)
←
Bulgarian
гра́бен
(link)
←
Bulgarian
гре́ба
(affix)
←
Bulgarian
-ен
(affix)
←
Bulgarian
гре́ба
(link)
←
Bulgarian
гребло́
(link)
←
Proto-Slavic
*grebenь
(inherited)
←
Proto-Slavic
*grebьnъ
(inherited)