Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
mouka
←
Proto-Slavic
*mǭka
(inherited)
→
Czech
moučník
(suffix)
→
Lower Sorbian
muka
(cognate)
→
Serbo-Croatian
muka
(cognate)