Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Dongxiang
shidun
←
Mongolian
шүд
(cognate)
←
Proto-Mongolic
*sidün
(inherited)
→
Mongolian
шүд
(cognate)