Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Prussian
stas
←
Proto-Balto-Slavic
*tas
(inherited)
→
Lithuanian
tai
(cognate)
→
Latvian
tas
(cognate)