Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Mongolic
*nidün
→
Mongolian
нүд
(inherited)
→
Dongxiang
nudun
(inherited)
→
Kalmyk
нүдн
(inherited)