Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*kruxъ
→
Czech
krušný
(derived)
→
Polish
kruch
(inherited)
→
Polish
kruchy
(inherited)
→
Serbo-Croatian
kruh
(inherited)
→
Serbo-Croatian
крух
(inherited)
→
Slovene
kruh
(inherited)