Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Kokborok
dok
←
Tibetan
དྲུག
(cognate)
←
Burmese
ခြောက်
(cognate)
←
Proto-Sino-Tibetan
*d-k-ruk
(inherited)