Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
поустота
←
Old Church Slavonic
поустъ
(suffix)
←
Old Church Slavonic
ота
(suffix)
→
Friulian
pustot
(cognate)