Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Upper Sorbian
měsac
←
Proto-Indo-European
*mḗh₁n̥s
(inherited)
←
Proto-Slavic
*měsęcь
(inherited)
→
Upper Sorbian
měsačk
(mention)