Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Macedonian
лакт
←
Bulgarian
лакът
(cognate)
←
Czech
loket
(cognate)
←
Russian
локоть
(cognate)
←
Proto-Slavic
*olkъtь
(inherited)