Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Khmer
រោល
←
Khmer
រួល
(doublet)
→
Khmer
រោលថ្ងៃ
(compound)
→
Khmer
រួល
(doublet)
→
Chinese
亂
(cognate)