Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Belarusian
пяты
←
Polish
piąty
(cognate)
←
Proto-Slavic
*pętъ
(inherited)
←
Ukrainian
п'я́тий
(cognate)