Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Thai
บวก
←
Khmer
បូក
(cognate)
←
Lao
ບວກ
(cognate)
←
Old Khmer
បូក
(borrowed)
→
Khmer
បូក
(cognate)
→
Lao
ບວກ
(cognate)
→
Thai
การบวก
(prefix)