Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
duum
←
Latin
duo
(mention)
←
Latin
duōrum
(cognate)
→
Latin
duumvir
(mention)
→
Latin
duûm
(mention)