Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
вересень
←
Belarusian
верасень
(cognate)
←
Old East Slavic
вересьнъ
(inherited)
←
Polish
wrzesień
(cognate)
←
Russian
ве́реск
(link)