Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Lower Sorbian
prozny
←
Upper Sorbian
prózdny
(cognate)
←
Proto-Slavic
*porzdьnъ
(inherited)
→
Lower Sorbian
prozniny
(mention)