Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Serbo-Croatian
blizanac
←
Bulgarian
близна́к
(cognate)
←
Polish
bliźniak
(cognate)
←
Russian
близне́ц
(cognate)
←
Proto-Slavic
*bliznьcь
(inherited)
→
Polish
bliźniak
(cognate)
→
Aromanian
biznat
(cognate)