Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
зрял
←
Bulgarian
зре́лостен
(link)
←
Bulgarian
зре́лостник
(link)
←
Bulgarian
зре́лостничка
(link)
←
Proto-Slavic
*zrělъ
(inherited)
→
Ukrainian
зрілий
(cognate)