Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
ieftin
←
Bulgarian
е́втин
(derived)
←
Greek
φτηνός
(borrowed)
←
Romanian
eftin
(mention)
→
Romanian
ieftini
(suffix)
→
Romanian
ieftinătate
(suffix)
→
Romanian
ieftior
(suffix)
→
Serbo-Croatian
jeftin
(cognate)
→
Serbo-Croatian
јефтин
(cognate)