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