Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
obtūsus
→
English
obtuse
(derived)
→
Spanish
obtuso
(derived)
→
French
obtus
(borrowed)
→
Ido
obtuza
(derived)
→
Latin
obtusatus
(mention)
→
Portuguese
obtuso
(derived)