Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
obtus
←
Latin
obtūsus
(borrowed)
→
French
obtusement
(suffix)
→
Ido
obtuza
(borrowed)
→
Romanian
obtuz
(borrowed)