Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Mon-Khmer
*ʔbuuʔ
→
Pnar
bu
(derived)
→
Pnar
ymbu
(derived)
→
Vietnamese
bú
(inherited)
→
Vietnamese
vú
(inherited)