Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Mongolian
арц
←
Proto-Mongolic
*arca
(inherited)
←
East Yugur
hrca
(cognate)
→
Mongolian
сан
(link)
→
East Yugur
hrca
(cognate)