Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
воскъ
←
Proto-Slavic
*voskъ
(inherited)
→
Lithuanian
vaškas
(cognate)
→
Latvian
vasks
(cognate)