Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Belarusian
штось
←
Belarusian
што
(suffix)
←
Belarusian
сь
(suffix)
←
Polish
coś
(cognate)
←
Ukrainian
щось
(cognate)
→
Belarusian
штосьці
(affix)