Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
obvention
←
English
ob-
(affix)
←
French
obvention
(cognate)
←
Latin
obventio
(derived)
←
Latin
obvenire
(mention)
←
Latin
ob
(mention)
←
Latin
venire
(mention)