Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Khmer
សុំ
←
Khmer
សូម
(cognate)
←
Old Khmer
suṃ
(inherited)
←
Old Khmer
soṃ
(inherited)
→
Khmer
សូម
(doublet)
→
Khmer
ឈរតាមផ្លូវសុំដោយសារឡានគេ
(compound)
→
Khmer
សុំទោស
(compound)
→
Khmer
ស្នើសុំ
(compound)