Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Kashubian
gãs
←
Proto-Indo-European
*ǵʰh₂éns
(inherited)
←
Proto-Slavic
*gǫ̑sь
(inherited)