Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Khmer
បុត្រ
←
Khmer
បុត្ត
(doublet)
←
Pali
putta
(borrowed)
←
Sanskrit
पुत्र
(borrowed)
→
Khmer
បុត្ត
(doublet)