Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Serbo-Croatian
јефтин
←
Bulgarian
евтин
(cognate)
←
Greek
φτηνός
(cognate)
←
Macedonian
евтин
(cognate)
←
Romanian
ieftin
(cognate)