Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Mongolic
*köke
→
Mongolian
хөх
(inherited)
→
Kalmyk
көк
(inherited)
→
Written Oirat
ᡍᡈᡍᡈ
(inherited)