Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Rarotongan
varu
←
Proto-Austronesian
*walu
(inherited)
←
Proto-Oceanic
*walu
(inherited)
←
Proto-Polynesian
*walu
(inherited)
←
Proto-Malayo-Polynesian
*walu
(inherited)