Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
observator
←
German
Observatorium
(borrowed)
←
French
observatoire
(borrowed)
←
French
observateur
(borrowed)
←
Latin
observatorium
(borrowed)
←
Latin
observator
(borrowed)