Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Belarusian
пяцьдзесят
←
Belarusian
пяць
(compound)
←
Belarusian
дзесяць
(compound)
←
Old Church Slavonic
пѧть дєсѧтъ
(cognate)
←
Russian
пятьдеся́т
(cognate)
←
Ukrainian
п'ятдеся́т
(cognate)