Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ukrainian
оптичний
←
Belarusian
апты́чны
(cognate)
←
Polish
optyczny
(cognate)
←
Russian
опти́ческий
(cognate)
←
Ukrainian
о́птика
(affix)
←
Ukrainian
-и́чний
(affix)