Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Jeju
오니
←
Japanese
瓜
(cognate)
←
Korean
오이
(cognate)
←
Kikai
瓜
(cognate)
←
Yoron
瓜
(cognate)