Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latgalian
puika
←
Proto-Finnic
*poika
(derived)
←
Lithuanian
puika
(cognate)
←
Latvian
puika
(cognate)