Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Mongolian
эрэх
←
Mongolian
эрэг
(link)
←
Mongolian
хэрэх
(link)
←
Dongxiang
eri
(cognate)
←
Proto-Mongolic
*eri-
(inherited)
←
Proto-Mongolic
(mention)
→
Mongolian
эрч
(link)