Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
prăpădi
←
Bulgarian
пропадам
(mention)
←
Serbo-Croatian
propasti
(mention)
→
Romanian
prăpădenie
(suffix)
→
Romanian
prăpăd
(back-formation)
→
Romanian
prăpădire
(suffix)
→
Romanian
prăpădit
(mention)