Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ukrainian
травень
←
Belarusian
тра́вень
(cognate)
←
Old East Slavic
травьнъ
(inherited)
←
Serbo-Croatian
travanj
(cognate)
←
Slovene
traven
(cognate)