Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Vietnamese
sam
←
Proto-Mon-Khmer
*kt₁aam
(inherited)
←
Vietnamese
đam
(cognate)
→
Vietnamese
đuôi sam
(compound)
→
Chinese
蟳
(cognate)