Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Atong (India)
wak
←
Proto-Sino-Tibetan
*pʷak
(inherited)
←
Proto-Bodo-Garo
*bwak
(inherited)