Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Garo
wak
←
Proto-Sino-Tibetan
*pʷak
(inherited)
←
Proto-Bodo-Garo
*bwak
(inherited)
→
Rabha
বাক
(cognate)
→
Kokborok
uak
(cognate)
→
Yamphu
फाक्मा
(cognate)