Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Vietnamese
dam
←
Proto-Mon-Khmer
*kt₁aam
(inherited)
←
Proto-Vietic
*k-taːm
(inherited)
←
Vietnamese
đam
(mention)