Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Lower Sorbian
což
←
Czech
což
(cognate)
←
Upper Sorbian
štož
(cognate)
←
Polish
cóż
(cognate)
←
Proto-Slavic
*čьsože
(inherited)