Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Belarusian
паўвостраў
←
Belarusian
паў-
(affix)
←
Belarusian
во́страў
(affix)
←
Russian
полуо́стров
(cognate)
←
Ukrainian
піво́стрів
(cognate)