Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Tokelauan
oku
←
Maori
ōku
(cognate)
←
Proto-Polynesian
*o-ku
(inherited)
→
Tokelauan
ota
(mention)