Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latvian
operācija
←
Latin
operātiō
(derived)
←
Latin
operor
(mention)
←
Latin
opus
(mention)
←
Latin
operis
(mention)