Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Dongxiang
darasun
←
Mongolian
дарс
(cognate)
←
Proto-Mongolic
*darasun
(inherited)
→
Mongolian
дарс
(cognate)
→
Dongxiang
darasuda
(suffix)
→
Dongxiang
darasuchi
(suffix)
→
Dongxiang
darasutu
(suffix)