Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Okinawan
神
←
Proto-Ryukyuan
*kami
(inherited)
→
Japanese
神人
(cognate)
→
Okinawan
火ぬ神
(affix)