Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Tokelauan
āu
←
Hawaiian
āu
(cognate)
←
Proto-Polynesian
*qa-u
(inherited)
←
Samoan
au
(cognate)