Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Mon-Khmer
*t₂puus ~ *t₂puəs ~ t₂pəs ~ *t₂piis ~ *t₂puəʔ
→
Khmer
បោស
(inherited)