Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Vietnamese tru
Proto-Mon-Khmer *ɟruuʔ (inherited(vi/pac))
Vietnamese tru di tam tộc (link)
Vietnamese tru di cửu tộc (link)
Vietnamese trời tru đất diệt (link)
Vietnamese trâu (link)

Khmer លូ (cognate)
Vietnamese trâu (mention)