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