Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
omorî
←
Serbo-Croatian
umoriti
(cognate)
←
Proto-Slavic
*umoriti
(derived)
→
Romanian
omor
(back-formation)
→
Romanian
omorâtor
(suffix)
→
Romanian
omorât
(mention)
→
Romanian
omorâre
(suffix)