Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Belarusian
сёмы
←
Polish
siódmy
(cognate)
←
Proto-Slavic
*sedmъ
(inherited)
←
Ukrainian
сьо́мий
(cognate)