Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ukrainian
обов'язково
←
Polish
obowiązkowo
(cognate)
←
Ukrainian
обов'язко́вий
(affix)
←
Ukrainian
-о
(affix)