Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
истъ
←
Proto-Slavic
*jistъ
(inherited)
→
Old Church Slavonic
истина
(link)
→
Latvian
īsts
(cognate)