Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Lithuanian
lūgnė
←
Proto-Balto-Slavic
*lukna
(derived)
←
Latvian
lukne
(cognate)
←
Proto-Slavic
*lъkno
(cognate)