Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ukrainian
смертний
←
Belarusian
смяро́тны
(cognate)
←
Polish
śmiertelny
(cognate)
←
Russian
сме́ртный
(cognate)
←
Ukrainian
смерть
(affix)
←
Ukrainian
-ний
(affix)