Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Esperanto
kutimi
←
Esperanto
kutimo
(affix)
←
Esperanto
-i
(affix)
→
Ido
kustumar
(cognate)