Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Serbo-Croatian
ноћас
←
Bulgarian
нощес
(cognate)
←
Old Church Slavonic
сь
(mention)
←
Serbo-Croatian
но̑ћ
(mention)
←
Proto-Slavic
*sь
(derived)