Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
остръ
←
Proto-Indo-European
*h₂eḱ-
(root)
←
Proto-Slavic
*ostrъ
(inherited)
→
Old Church Slavonic
острость
(suffix)
→
Ancient Greek
ἄκρος
(cognate)
→
Latvian
ass
(cognate)