Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
пръст
←
Proto-Indo-European
*pers-
(derived)
←
Proto-Slavic
*pьrstъ
(inherited)
←
Proto-Slavic
*pьrstь
(inherited)
→
Bulgarian
напръстник
(affix)
→
Bulgarian
трипръстка
(affix)
→
Latvian
pirksts
(cognate)